CAPE CANAVERAL, Fla. -- A technician completes the installation of a new bearing on crawler-transporter 2 in Vehicle Assembly Building High Bay 2 at NASA's Kennedy Space Center in Florida. Modifications underway on the crawler are designed to ensure its ability to transport launch vehicles currently under development, such as the agency’s Space Launch System, to the launch pad. Present modifications represent a redesign and upgrade to the roller bearings and assemblies originally installed on the crawler. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform carrying the Apollo-Saturn V rockets and space shuttles to Launch Pads 39A and 39B. For more information, visit http://www.nasa.gov/exploration/systems/ground/crawler-transporter_bearings_prt.htm. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- Technicians in the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, are removing cover plates in preparation for replacing the roller bearing assemblies on crawler-transporter 2, or CT-2. The modifications are designed to ensure CT-2's ability to transport launch vehicles currently in development, such as the agency's Space Launch System which will send the Orion spacecraft carrying humans to new destinations in the solar system. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades to CT-2 so that it can carry NASA’s Space Launch System heavy-lift rocket and new Orion spacecraft to the launch pad. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform and the Apollo-Saturn V rockets and, later, space shuttles to Launch Pads 39A and B. For more information, visit: http://www.nasa.gov/exploration/systems/ground/crawler-transporter_bearings.html Photo credit: NASA/Tim Jacobs

CAPE CANAVERAL, Fla. -- Technicians in the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, prepare to jack crawler-transporter 2, or CT-2, four feet off the floor to facilitate removal of the roller bearing assemblies. After inspections, new assemblies will be installed. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades to CT-2 so that it can carry NASA’s Space Launch System heavy-lift rocket and new Orion spacecraft to the launch pad. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform and the Apollo-Saturn V rockets and, later, space shuttles to Launch Pads 39A and B. Photo credit: NASA_Dimitri Gerondidakis

CAPE CANAVERAL, Fla. -- Technicians in the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, are preparing to jack crawler-transporter 2, or CT-2, four feet off the floor to facilitate removal of the roller bearing assemblies. After inspections, new assemblies will be installed. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades to CT-2 so that it can carry NASA’s Space Launch System heavy-lift rocket and new Orion spacecraft to the launch pad. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform and the Apollo-Saturn V rockets and, later, space shuttles to Launch Pads 39A and B. Photo credit: NASA/Charisse Nahser

CAPE CANAVERAL, Fla. -- Technicians in the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, are jacking crawler-transporter 2, or CT-2, four feet off the floor to facilitate removal of the roller bearing assemblies. After inspections, new assemblies will be installed. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades to CT-2 so that it can carry NASA’s Space Launch System heavy-lift rocket and new Orion spacecraft to the launch pad. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform and the Apollo-Saturn V rockets and, later, space shuttles to Launch Pads 39A and B. Photo credit: NASA/Charisse Nahser

CAPE CANAVERAL, Fla. -- Technicians install a new bearing on crawler-transporter 2 in Vehicle Assembly Building High Bay 2 at NASA's Kennedy Space Center in Florida. Modifications underway on the crawler are designed to ensure its ability to transport launch vehicles currently under development, such as the agency’s Space Launch System, to the launch pad. Present modifications represent a redesign and upgrade to the roller bearings and assemblies originally installed on the crawler. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform carrying the Apollo-Saturn V rockets and space shuttles to Launch Pads 39A and 39B. For more information, visit http://www.nasa.gov/exploration/systems/ground/crawler-transporter_bearings_prt.htm. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- Technicians in the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, prepare to jack crawler-transporter 2, or CT-2, four feet off the floor to facilitate removal of the roller bearing assemblies. After inspections, new assemblies will be installed. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades to CT-2 so that it can carry NASA’s Space Launch System heavy-lift rocket and new Orion spacecraft to the launch pad. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform and the Apollo-Saturn V rockets and, later, space shuttles to Launch Pads 39A and B. Photo credit: NASA/Charisse Nahser

CAPE CANAVERAL, Fla. -- Technicians in the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, begin jacking crawler-transporter 2, or CT-2, four feet off the floor to facilitate removal of the roller bearing assemblies. After inspections, new assemblies will be installed. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades to CT-2 so that it can carry NASA’s Space Launch System heavy-lift rocket and new Orion spacecraft to the launch pad. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform and the Apollo-Saturn V rockets and, later, space shuttles to Launch Pads 39A and B. Photo credit: NASA/Charisse Nahser

CAPE CANAVERAL, Fla. -- Technicians in the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, are removing cover plates in preparation for replacing the roller bearing assemblies on crawler-transporter 2, or CT-2. The modifications are designed to ensure CT-2's ability to transport launch vehicles currently in development, such as the agency's Space Launch System which will send the Orion spacecraft carrying humans to new destinations in the solar system. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades to CT-2 so that it can carry NASA’s Space Launch System heavy-lift rocket and new Orion spacecraft to the launch pad. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform and the Apollo-Saturn V rockets and, later, space shuttles to Launch Pads 39A and B. For more information, visit: http://www.nasa.gov/exploration/systems/ground/crawler-transporter_bearings.html Photo credit: NASA/Tim Jacobs

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, a technician uses a fork lift to remove track shoes from crawler-transporter 2, or CT-2, prior to jacking it four feet off the floor to facilitate removal of the roller bearing assemblies. After inspections, new assemblies will be installed. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades to CT-2 so that it can carry NASA’s Space Launch System heavy-lift rocket and new Orion spacecraft to the launch pad. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform and the Apollo-Saturn V rockets and, later, space shuttles to Launch Pads 39A and B. Photo credit: NASA/Charisse Nahser

CAPE CANAVERAL, Fla. -- Technicians in the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, are removing cover plates in preparation for replacing the roller bearing assemblies on crawler-transporter 2, or CT-2. The modifications are designed to ensure CT-2's ability to transport launch vehicles currently in development, such as the agency's Space Launch System which will send the Orion spacecraft carrying humans to new destinations in the solar system. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades to CT-2 so that it can carry NASA’s Space Launch System heavy-lift rocket and new Orion spacecraft to the launch pad. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform and the Apollo-Saturn V rockets and, later, space shuttles to Launch Pads 39A and B. For more information, visit: http://www.nasa.gov/exploration/systems/ground/crawler-transporter_bearings.html Photo credit: NASA/Tim Jacobs

CAPE CANAVERAL, Fla. -- Technicians in the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, are removing cover plates in preparation for replacing the roller bearing assemblies on crawler-transporter 2, or CT-2. The modifications are designed to ensure CT-2's ability to transport launch vehicles currently in development, such as the agency's Space Launch System which will send the Orion spacecraft carrying humans to new destinations in the solar system. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades to CT-2 so that it can carry NASA’s Space Launch System heavy-lift rocket and new Orion spacecraft to the launch pad. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform and the Apollo-Saturn V rockets and, later, space shuttles to Launch Pads 39A and B. For more information, visit: http://www.nasa.gov/exploration/systems/ground/crawler-transporter_bearings.html Photo credit: NASA/Tim Jacobs

CAPE CANAVERAL, Fla. -- Technicians in the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, prepare crawler-transporter 2, or CT-2, for removal of the roller bearing assemblies. After inspections, new assemblies will be installed. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades to CT-2 so that it can carry NASA’s Space Launch System heavy-lift rocket and new Orion spacecraft to the launch pad. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform and the Apollo-Saturn V rockets and, later, space shuttles to Launch Pads 39A and B. For more information: http:__www.nasa.gov_exploration_systems_ground_crawler-transporter_bearings.html Photo credit: NASA_Tim Jacobs

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, crawler-transporter 2, or CT-2, has been jacked four feet off the floor to facilitate removal of the roller bearing assemblies. After inspections, new assemblies will be installed. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades to CT-2 so that it can carry NASA’s Space Launch System heavy-lift rocket and new Orion spacecraft to the launch pad. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform and the Apollo-Saturn V rockets and, later, space shuttles to Launch Pads 39A and B. For more information: http:__www.nasa.gov_exploration_systems_ground_crawler-transporter_bearings.html Photo credit: NASA_Tim Jacobs

CAPE CANAVERAL, Fla. -- A technician installs a new bearing on crawler-transporter 2 in Vehicle Assembly Building High Bay 2 at NASA's Kennedy Space Center in Florida. Modifications underway on the crawler are designed to ensure its ability to transport launch vehicles currently under development, such as the agency’s Space Launch System, to the launch pad. Present modifications represent a redesign and upgrade to the roller bearings and assemblies originally installed on the crawler. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform carrying the Apollo-Saturn V rockets and space shuttles to Launch Pads 39A and 39B. For more information, visit http://www.nasa.gov/exploration/systems/ground/crawler-transporter_bearings_prt.htm. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- Technicians in the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, are removing track shoes from crawler-transporter 2, or CT-2, prior to jacking it four feet off the floor to facilitate removal of the roller bearing assemblies. After inspections, new assemblies will be installed. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades to CT-2 so that it can carry NASA’s Space Launch System heavy-lift rocket and new Orion spacecraft to the launch pad. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform and the Apollo-Saturn V rockets and, later, space shuttles to Launch Pads 39A and B. Photo credit: NASA/Charisse Nahser

CAPE CANAVERAL, Fla. -- Technicians in the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, prepare to jack crawler-transporter 2, or CT-2, four feet off the floor to facilitate removal of the roller bearing assemblies. After inspections, new assemblies will be installed. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades to CT-2 so that it can carry NASA’s Space Launch System heavy-lift rocket and new Orion spacecraft to the launch pad. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform and the Apollo-Saturn V rockets and, later, space shuttles to Launch Pads 39A and B. Photo credit: NASA_Dimitri Gerondidakis

CAPE CANAVERAL, Fla. -- Technicians install a new bearing on crawler-transporter 2 in the Vehicle Assembly Building High Bay 2 at NASA's Kennedy Space Center in Florida. Modifications underway on the crawler are designed to ensure its ability to transport launch vehicles currently under development, such as the agency’s Space Launch System, to the launch pad. Present modifications represent a redesign and upgrade to the roller bearings and assemblies originally installed on the crawler. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform carrying the Apollo-Saturn V rockets and space shuttles to Launch Pads 39A and 39B. For more information, visit http://www.nasa.gov/exploration/systems/ground/crawler-transporter_bearings_prt.htm. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- Technicians in the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, are preparing to jack crawler-transporter 2, or CT-2, four feet off the floor to facilitate removal of the roller bearing assemblies. After inspections, new assemblies will be installed. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades to CT-2 so that it can carry NASA’s Space Launch System heavy-lift rocket and new Orion spacecraft to the launch pad. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform and the Apollo-Saturn V rockets and, later, space shuttles to Launch Pads 39A and B. Photo credit: NASA/Charisse Nahser

CAPE CANAVERAL, Fla. -- Technicians in the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, are jacking crawler-transporter 2, or CT-2, four feet off the floor to facilitate removal of the roller bearing assemblies. After inspections, new assemblies will be installed. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades to CT-2 so that it can carry NASA’s Space Launch System heavy-lift rocket and new Orion spacecraft to the launch pad. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform and the Apollo-Saturn V rockets and, later, space shuttles to Launch Pads 39A and B. Photo credit: NASA/Charisse Nahser

CAPE CANAVERAL, Fla. -- Technicians in the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, are removing track shoes from crawler-transporter 2, or CT-2, prior to jacking it four feet off the floor to facilitate removal of the roller bearing assemblies. After inspections, new assemblies will be installed. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades to CT-2 so that it can carry NASA’s Space Launch System heavy-lift rocket and new Orion spacecraft to the launch pad. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform and the Apollo-Saturn V rockets and, later, space shuttles to Launch Pads 39A and B. Photo credit: NASA/Charisse Nahser

CAPE CANAVERAL, Fla. -- Technicians in the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, prepare to jack crawler-transporter 2, or CT-2, four feet off the floor to facilitate removal of the roller bearing assemblies. After inspections, new assemblies will be installed. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades to CT-2 so that it can carry NASA’s Space Launch System heavy-lift rocket and new Orion spacecraft to the launch pad. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform and the Apollo-Saturn V rockets and, later, space shuttles to Launch Pads 39A and B. Photo credit: NASA/Charisse Nahser

CAPE CANAVERAL, Fla. -- Technicians in the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, prepare crawler-transporter 2, or CT-2, for removal of the roller bearing assemblies. After inspections, new assemblies will be installed. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades to CT-2 so that it can carry NASA’s Space Launch System heavy-lift rocket and new Orion spacecraft to the launch pad. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform and the Apollo-Saturn V rockets and, later, space shuttles to Launch Pads 39A and B. For more information: http:__www.nasa.gov_exploration_systems_ground_crawler-transporter_bearings.html Photo credit: NASA_Tim Jacobs

CAPE CANAVERAL, Fla. -- Technicians in the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, are jacking crawler-transporter 2, or CT-2, four feet off the floor to facilitate removal of the roller bearing assemblies. After inspections, new assemblies will be installed. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades to CT-2 so that it can carry NASA’s Space Launch System heavy-lift rocket and new Orion spacecraft to the launch pad. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform and the Apollo-Saturn V rockets and, later, space shuttles to Launch Pads 39A and B. Photo credit: NASA/Charisse Nahser

CAPE CANAVERAL, Fla. -- Technicians in the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, are preparing to jack crawler-transporter 2, or CT-2, four feet off the floor to facilitate removal of the roller bearing assemblies. After inspections, new assemblies will be installed. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades to CT-2 so that it can carry NASA’s Space Launch System heavy-lift rocket and new Orion spacecraft to the launch pad. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform and the Apollo-Saturn V rockets and, later, space shuttles to Launch Pads 39A and B. Photo credit: NASA/Charisse Nahser

CAPE CANAVERAL, Fla. -- Technicians in the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, prepare to jack crawler-transporter 2, or CT-2, four feet off the floor to facilitate removal of the roller bearing assemblies. After inspections, new assemblies will be installed. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades to CT-2 so that it can carry NASA’s Space Launch System heavy-lift rocket and new Orion spacecraft to the launch pad. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform and the Apollo-Saturn V rockets and, later, space shuttles to Launch Pads 39A and B. Photo credit: NASA_Dimitri Gerondidakis

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, a technician positions a jack to lift crawler-transporter 2, or CT-2, four feet off the floor to facilitate removal of the roller bearing assemblies. After inspections, new assemblies will be installed. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades to CT-2 so that it can carry NASA’s Space Launch System heavy-lift rocket and new Orion spacecraft to the launch pad. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform and the Apollo-Saturn V rockets and, later, space shuttles to Launch Pads 39A and B. Photo credit: NASA/Charisse Nahser

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, crawler-transporter 2, or CT-2, has been jacked four feet off the floor to facilitate removal of the roller bearing assemblies. After inspections, new assemblies will be installed. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades to CT-2 so that it can carry NASA’s Space Launch System heavy-lift rocket and new Orion spacecraft to the launch pad. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform and the Apollo-Saturn V rockets and, later, space shuttles to Launch Pads 39A and B. For more information: http:__www.nasa.gov_exploration_systems_ground_crawler-transporter_bearings.html Photo credit: NASA_Tim Jacobs

CAPE CANAVERAL, Fla. -- Steady progress is made on the installation of new bearings on crawler-transporter 2 in Vehicle Assembly Building High Bay 2 at NASA's Kennedy Space Center in Florida. Modifications underway on the crawler are designed to ensure its ability to transport launch vehicles currently under development, such as the agency’s Space Launch System, to the launch pad. Present modifications represent a redesign and upgrade to the roller bearings and assemblies originally installed on the crawler. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform carrying the Apollo-Saturn V rockets and space shuttles to Launch Pads 39A and 39B. For more information, visit http://www.nasa.gov/exploration/systems/ground/crawler-transporter_bearings_prt.htm. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- Technicians in the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, are removing cover plates in preparation for replacing the roller bearing assemblies on crawler-transporter 2, or CT-2. The modifications are designed to ensure CT-2's ability to transport launch vehicles currently in development, such as the agency's Space Launch System which will send the Orion spacecraft carrying humans to new destinations in the solar system. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades to CT-2 so that it can carry NASA’s Space Launch System heavy-lift rocket and new Orion spacecraft to the launch pad. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform and the Apollo-Saturn V rockets and, later, space shuttles to Launch Pads 39A and B. For more information, visit: http://www.nasa.gov/exploration/systems/ground/crawler-transporter_bearings.html Photo credit: NASA/Tim Jacobs

CAPE CANAVERAL, Fla. -- A technician completes the installation of a new bearing on crawler-transporter 2 in Vehicle Assembly Building High Bay 2 at NASA's Kennedy Space Center in Florida. Modifications underway on the crawler are designed to ensure its ability to transport launch vehicles currently under development, such as the agency’s Space Launch System, to the launch pad. Present modifications represent a redesign and upgrade to the roller bearings and assemblies originally installed on the crawler. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform carrying the Apollo-Saturn V rockets and space shuttles to Launch Pads 39A and 39B. For more information, visit http://www.nasa.gov/exploration/systems/ground/crawler-transporter_bearings_prt.htm. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- Technicians install a new bearing on crawler-transporter 2 in Vehicle Assembly Building High Bay 2 at NASA's Kennedy Space Center in Florida. Modifications underway on the crawler are designed to ensure its ability to transport launch vehicles currently under development, such as the agency’s Space Launch System, to the launch pad. Present modifications represent a redesign and upgrade to the roller bearings and assemblies originally installed on the crawler. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform carrying the Apollo-Saturn V rockets and space shuttles to Launch Pads 39A and 39B. For more information, visit http://www.nasa.gov/exploration/systems/ground/crawler-transporter_bearings_prt.htm. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- Technicians complete the installation of a new bearing on crawler-transporter 2 in Vehicle Assembly Building High Bay 2 at NASA's Kennedy Space Center in Florida. Modifications underway on the crawler are designed to ensure its ability to transport launch vehicles currently under development, such as the agency’s Space Launch System, to the launch pad. Present modifications represent a redesign and upgrade to the roller bearings and assemblies originally installed on the crawler. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform carrying the Apollo-Saturn V rockets and space shuttles to Launch Pads 39A and 39B. For more information, visit http://www.nasa.gov/exploration/systems/ground/crawler-transporter_bearings_prt.htm. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- The installation of new bearings on crawler-transporter 2 is underway in Vehicle Assembly Building High Bay 2 at NASA's Kennedy Space Center in Florida. Modifications underway on the crawler are designed to ensure its ability to transport launch vehicles currently under development, such as the agency’s Space Launch System, to the launch pad. Present modifications represent a redesign and upgrade to the roller bearings and assemblies originally installed on the crawler. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform carrying the Apollo-Saturn V rockets and space shuttles to Launch Pads 39A and 39B. For more information, visit http://www.nasa.gov/exploration/systems/ground/crawler-transporter_bearings_prt.htm. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- Preparations are underway to install new bearings on crawler-transporter 2 in the Vehicle Assembly Building High Bay 2 at NASA's Kennedy Space Center in Florida. Modifications underway on the crawler are designed to ensure its ability to transport launch vehicles currently under development, such as the agency’s Space Launch System, to the launch pad. Present modifications represent a redesign and upgrade to the roller bearings and assemblies originally installed on the crawler. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform carrying the Apollo-Saturn V rockets and space shuttles to Launch Pads 39A and 39B. For more information, visit http://www.nasa.gov/exploration/systems/ground/crawler-transporter_bearings_prt.htm. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- Technicians in the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, prepare to jack crawler-transporter 2, or CT-2, four feet off the floor to facilitate removal of the roller bearing assemblies. After inspections, new assemblies will be installed. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades to CT-2 so that it can carry NASA’s Space Launch System heavy-lift rocket and new Orion spacecraft to the launch pad. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform and the Apollo-Saturn V rockets and, later, space shuttles to Launch Pads 39A and B. Photo credit: NASA/Charisse Nahser

CAPE CANAVERAL, Fla. -- Technicians in the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, are removing cover plates in preparation for replacing the roller bearing assemblies on crawler-transporter 2, or CT-2. The modifications are designed to ensure CT-2's ability to transport launch vehicles currently in development, such as the agency's Space Launch System which will send the Orion spacecraft carrying humans to new destinations in the solar system. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades to CT-2 so that it can carry NASA’s Space Launch System heavy-lift rocket and new Orion spacecraft to the launch pad. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform and the Apollo-Saturn V rockets and, later, space shuttles to Launch Pads 39A and B. For more information, visit: http://www.nasa.gov/exploration/systems/ground/crawler-transporter_bearings.html Photo credit: NASA/Tim Jacobs

CAPE CANAVERAL, Fla. -- A technician installs a new bearing on crawler-transporter 2 in Vehicle Assembly Building High Bay 2 at NASA's Kennedy Space Center in Florida. Modifications underway on the crawler are designed to ensure its ability to transport launch vehicles currently under development, such as the agency’s Space Launch System, to the launch pad. Present modifications represent a redesign and upgrade to the roller bearings and assemblies originally installed on the crawler. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform carrying the Apollo-Saturn V rockets and space shuttles to Launch Pads 39A and 39B. For more information, visit http://www.nasa.gov/exploration/systems/ground/crawler-transporter_bearings_prt.htm. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- The installation of new bearings on crawler-transporter 2 is underway in Vehicle Assembly Building High Bay 2 at NASA's Kennedy Space Center in Florida. Modifications underway on the crawler are designed to ensure its ability to transport launch vehicles currently under development, such as the agency’s Space Launch System, to the launch pad. Present modifications represent a redesign and upgrade to the roller bearings and assemblies originally installed on the crawler. The Ground Systems Development and Operations Program office at Kennedy is overseeing the upgrades. For more than 45 years the crawler-transporters were used to transport the mobile launcher platform carrying the Apollo-Saturn V rockets and space shuttles to Launch Pads 39A and 39B. For more information, visit http://www.nasa.gov/exploration/systems/ground/crawler-transporter_bearings_prt.htm. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, a road-grader resurfaces a section of the crawlerway leading from the Vehicle Assembly Building VAB to the launch pads. The Ground Systems Development and Operations GSDO Program office at Kennedy is working to upgrade the two 40-foot-wide pathways the crawler-transporter will travel as it transports launch vehicles such as NASA's Space Launch System SLS rocket from the VAB to the launch pad. For more: http:__www.nasa.gov_exploration_systems_ground_crawlerway_upgrades.html Photo credit: NASA_Jim Grossman

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, screening equipment is operating to separate pulverized Alabama river rock from stones still usable in the crawlerway leading from the Vehicle Assembly Building VAB to the launch pads. The rock no longer suitable for the crawlerway will be reused in other areas of the spaceport. After years of wear from the weight of space shuttles being transported to the launch pads, the crawlerway was in need of resurfacing in preparation for future programs. The Ground Systems Development and Operations GSDO Program office at Kennedy is working to upgrade the two 40-foot-wide pathways the crawler-transporter will travel as it transports vehicles such as NASA's Space Launch System SLS rocket from the VAB to the launch pad. For more: http:__www.nasa.gov_exploration_systems_ground_crawlerway_upgrades.html Photo credit: NASA_Jim Grossmann

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, screening equipment is operating to separate pulverized Alabama river rock from stones still usable in the crawlerway leading from the Vehicle Assembly Building VAB to the launch pads. The rock no longer suitable for the crawlerway will be reused in other areas of the spaceport. After years of wear from the weight of space shuttles being transported to the launch pads, the crawlerway was in need of resurfacing in preparation for future programs. The Ground Systems Development and Operations GSDO Program office at Kennedy is working to upgrade the two 40-foot-wide pathways the crawler-transporter will travel as it transports vehicles such as NASA's Space Launch System SLS rocket from the VAB to the launch pad. For more: http:__www.nasa.gov_exploration_systems_ground_crawlerway_upgrades.html Photo credit: NASA_Jim Grossmann

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, screening equipment is operating to separate pulverized Alabama river rock from stones still usable in the crawlerway leading from the Vehicle Assembly Building VAB to the launch pads. The rock no longer suitable for the crawlerway will be reused in other areas of the spaceport. After years of wear from the weight of space shuttles being transported to the launch pads, the crawlerway was in need of resurfacing in preparation for future programs. The Ground Systems Development and Operations GSDO Program office at Kennedy is working to upgrade the two 40-foot-wide pathways the crawler-transporter will travel as it transports vehicles such as NASA's Space Launch System SLS rocket from the VAB to the launch pad. For more: http:__www.nasa.gov_exploration_systems_ground_crawlerway_upgrades.html Photo credit: NASA_Jim Grossmann