NASA astronauts Barry “Butch” Wilmore and Sunita "Suni" Williams visit the Commercial Crew and Cargo Processing Facility at Kennedy Space Center in Florida on Dec. 17, 2020. The astronauts are at Kennedy to prepare for their flights to the International Space Station on Boeing’s CST-100 Starliner, as part of the agency’s Commercial Crew Program. Wilmore and Williams will command the Crew Flight Test and the Starliner-1 mission, respectively.

Technicians work on the NASA Docking System (NDS) hatch installation in the Commercial Crew and Cargo Processing Facility at Kennedy Space Center in Florida on Jan. 2, 2021. The NDS cover was installed on Boeing’s Starliner spacecraft in preparation for the company’s second Orbital Flight Test (OFT-2), as part of NASA’s Commercial Crew Program. The cover is designed to protect the components that connect the spacecraft to the International Space Station.

Boeing technicians install back shells on the Orbital Flight Test-2 (OFT-2) Starliner crew module inside the company’s Commercial Crew and Cargo Processing Facility at NASA’s Kennedy Space Center in Florida on December 2, 2020. During the OFT-2 mission, the uncrewed Starliner spacecraft will fly to the International Space Station for NASA’s Commercial Crew Program.

NASA astronauts Barry “Butch” Wilmore, left, and Sunita "Suni" Williams visit the Commercial Crew and Cargo Processing Facility at Kennedy Space Center in Florida on Dec. 17, 2020. The astronauts are at Kennedy to prepare for their flights to the International Space Station on Boeing’s CST-100 Starliner, as part of the agency’s Commercial Crew Program. Wilmore and Williams will command the Crew Flight Test and the Starliner-1 mission, respectively.

Technicians work on the NASA Docking System (NDS) cover hatch installation in the Commercial Crew and Cargo Processing Facility at Kennedy Space Center in Florida on Jan. 2, 2021. The NDS cover was installed on Boeing’s Starliner spacecraft in preparation for the company’s second Orbital Flight Test (OFT-2), as part of NASA’s Commercial Crew Program. The cover is designed to protect the components that connect the spacecraft to the International Space Station.

Boeing technicians install back shells on the Orbital Flight Test-2 (OFT-2) Starliner crew module inside the company’s Commercial Crew and Cargo Processing Facility at NASA’s Kennedy Space Center in Florida on December 2, 2020. During the OFT-2 mission, the uncrewed Starliner spacecraft will fly to the International Space Station for NASA’s Commercial Crew Program.

Boeing’s Starliner crew module is weighed in the Commercial Crew and Cargo Processing Facility at Kennedy Space Center in Florida on Jan. 14, 2021, in preparation for the company’s second Orbital Flight Test (OFT-2), as part of NASA’s Commercial Crew Program.. The Weight and Center of Gravity test measures the weight and balance of the spacecraft to ensure optimal performance during launch and re-entry. The test helps to validate parameters required for launching on United Launch Alliance’s Atlas V rocket, docking to the International Space Station and for navigation of the vehicle, among others.

Boeing’s Starliner crew module is hoisted and moves past the service module in the Commercial Crew and Cargo Processing Facility at Kennedy Space Center in Florida on Wednesday, Jan. 13, 2021, prior to the weight and center of gravity test. The crew module and service module will soon be mated, making the spacecraft complete for the company’s second Orbital Flight Test (OFT-2) for NASA’s Commercial Crew Program. OFT-2 is a critical developmental milestone on the company’s path toward flying crew missions for NASA.

Rosie the Rocketeer, Boeing’s anthropometric test device, claimed her spot once again in the commander’s seat inside the company’s CST-100 Starliner spacecraft for its second uncrewed Orbital Flight Test (OFT-2) for NASA’s Commercial Crew Program. Rosie’s first flight, OFT, provided hundreds of data points about what astronauts will experience during flight. For OFT-2, she will help maintain Starliner’s center of gravity during ascent, docking, undocking and landing. OFT-2 is scheduled to lift off at 2:53 p.m. ET Friday, July 30, from Space Launch Complex 41 at Cape Canaveral Space Force Station in Florida bound for the International Space Station.

The Boeing Starliner crew module is hoisted across the Commercial Crew and Cargo Processing Facility at NASA’s Kennedy Space Center in Florida on Jan. 14, 2021, to be mated with the service module. The Starliner spacecraft is being prepared for Boeing’s second Orbital Flight Test (OFT-2). As part of the agency’s Commercial Crew Program, OFT-2 is a critical developmental milestone on the company’s path to fly crew missions for NASA.

Boeing’s Starliner crew module, with back shells installed, is inside the company’s Commercial Crew and Cargo Processing Facility at Kennedy Space Center on December 8, 2020, in preparation for the Orbital Flight Test-2 (OFT-2). During the OFT-2 mission, the uncrewed Starliner spacecraft will fly to the International Space Station for NASA’s Commercial Crew Program.

Boeing’s Starliner crew module is weighed in the Commercial Crew and Cargo Processing Facility at Kennedy Space Center in Florida on Jan. 14, 2021, in preparation for the company’s second Orbital Flight Test (OFT-2), as part of NASA’s Commercial Crew Program.. The Weight and Center of Gravity test measures the weight and balance of the spacecraft to ensure optimal performance during launch and re-entry. The test helps to validate parameters required for launching on United Launch Alliance’s Atlas V rocket, docking to the International Space Station and for navigation of the vehicle, among others.

Technicians observe Boeing’s Starliner crew module being placed on top of the service module in the Commercial Crew and Cargo Processing Facility at NASA’s Kennedy Space Center in Florida on Jan. 14, 2021. The Starliner spacecraft is being prepared for Boeing’s second Orbital Flight Test (OFT-2). As part of the agency’s Commercial Crew Program, OFT-2 is a critical developmental milestone on the company’s path to fly crew missions for NASA.

Boeing technicians install back shells on the Orbital Flight Test-2 (OFT-2) Starliner crew module inside the company’s Commercial Crew and Cargo Processing Facility at NASA’s Kennedy Space Center in Florida on December 2, 2020. During the OFT-2 mission, the uncrewed Starliner spacecraft will fly to the International Space Station for NASA’s Commercial Crew Program.

The completed Boeing Starliner vehicle for the second Orbital Flight Test (OFT-2) is seen in the Commercial Crew and Cargo Processing Facility at NASA’s Kennedy Space Center in Florida following the mating of the crew module and service module on Jan. 14, 2021. As part of the agency’s Commercial Crew Program, OFT-2 is a critical developmental milestone on the company’s path to fly crew missions for NASA.

Boeing’s Starliner crew module is weighed in the Commercial Crew and Cargo Processing Facility at Kennedy Space Center in Florida on Jan. 14, 2021, in preparation for the company’s second Orbital Flight Test (OFT-2), as part of NASA’s Commercial Crew Program.. The Weight and Center of Gravity test measures the weight and balance of the spacecraft to ensure optimal performance during launch and re-entry. The test helps to validate parameters required for launching on United Launch Alliance’s Atlas V rocket, docking to the International Space Station and for navigation of the vehicle, among others.

Boeing’s Starliner crew module, with back shells installed, is inside the company’s Commercial Crew and Cargo Processing Facility at Kennedy Space Center on December 8, 2020, in preparation for the Orbital Flight Test-2 (OFT-2). During the OFT-2 mission, the uncrewed Starliner spacecraft will fly to the International Space Station for NASA’s Commercial Crew Program.

A technician observes the functional test of the NASA Docking System (NDS) cover in the Commercial Crew and Cargo Processing Facility at Kennedy Space Center in Florida on Jan. 2, 2021. The test was conducted in preparation for Boeing’s second Orbital Flight Test (OFT-2), as part of NASA’s Commercial Crew Program. The cover is designed to protect the components that connect the spacecraft to the International Space Station.