STS-126 Mission Specialist Donald Pettit fits the cap worn under the helmet.

In the White Room on Launch Pad 39A at NASA's Kennedy Space Center in Florida, STS-126 Mission Specialist Donald Pettit fits the cap worn under the helmet. In the background is the hatch for entry into space shuttle Endeavour. STS-126 is the 124th space shuttle flight and the 27th flight to the International Space Station. The mission will feature four spacewalks and work that will prepare the space station to house six crew members for long- duration missions. Liftoff is scheduled for 7:55 p.m. EST Nov. 14. Photo credit: NASA/Sandra Joseph-Kevin O'Connell