CAPE CANAVERAL, Fla. – In Orbiter Processing Facility bay 2 at NASA's Kennedy Space Center in Florida, window six on space shuttle Endeavour is being replaced. Endeavour is the designated launch vehicle for the STS-127 mission. The Japanese Experiment Module's Experiment Logistics Module-Exposed Section, or ELM-ES, is part of the payload on the mission, targeted for launch on May 15. Photo credit: NASA/Tim Jacobs

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility bay 2 at NASA's Kennedy Space Center in Florida, workers maneuver the new window replacing window six on space shuttle Endeavour. Endeavour is the designated launch vehicle for the STS-127 mission. The Japanese Experiment Module's Experiment Logistics Module-Exposed Section, or ELM-ES, is part of the payload on the mission, targeted for launch on May 15. Photo credit: NASA/Tim Jacobs

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility bay 2 at NASA's Kennedy Space Center in Florida, workers put the new window six into place on space shuttle Endeavour. Endeavour is the designated launch vehicle for the STS-127 mission. The Japanese Experiment Module's Experiment Logistics Module-Exposed Section, or ELM-ES, is part of the payload on the mission, targeted for launch on May 15. Photo credit: NASA/Tim Jacobs

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility bay 2 at NASA's Kennedy Space Center in Florida, workers prepare a new window to replace window six on space shuttle Endeavour. Endeavour is the designated launch vehicle for the STS-127 mission. The Japanese Experiment Module's Experiment Logistics Module-Exposed Section, or ELM-ES, is part of the payload on the mission, targeted for launch on May 15. Photo credit: NASA/Tim Jacobs

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility bay 2 at NASA's Kennedy Space Center in Florida, workers prepare a new window to replace window six on space shuttle Endeavour. Endeavour is the designated launch vehicle for the STS-127 mission. The Japanese Experiment Module's Experiment Logistics Module-Exposed Section, or ELM-ES, is part of the payload on the mission, targeted for launch on May 15. Photo credit: NASA/Tim Jacobs

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility bay 2 at NASA's Kennedy Space Center in Florida, workers attach a tool to lift the replacement window for space shuttle Endeavour. Endeavour is the designated launch vehicle for the STS-127 mission. The Japanese Experiment Module's Experiment Logistics Module-Exposed Section, or ELM-ES, is part of the payload on the mission, targeted for launch on May 15. Photo credit: NASA/Tim Jacobs

STS099-305-012 (11-22 February 2000) --- Astronaut Gerhard P.J. Thiele, mission specialist, records Earth imagery from Endeavour's aft flight deck. Thiele, a Red Team member supporting the SRTM flight's 24-hour coverage, represents the European Space Agency (ESA).