STS-129 Spacewalkers "Camping Out" in Airlock

STS-129 Mission Specialists Mike Foreman and Robert Satcher, set to perform the first spacewalk of the mission Thursday, are spending the night in the Quest airlock as part of the overnight “campout” procedure that helps purge nitrogen from their bloodstreams, preventing decompression sickness once they move out into the vacuum of space.

The International Space Station crew is scheduled to go to sleep at 7:58 p.m. EST, and the shuttle crew heads to bed a half hour later. Both crews are set to wake up Thursday at 4:28 a.m. The first spacewalk is slated to begin at 9:18 a.m.