
This picture provided by NASA shows STS-123 Mission Specialist Takao Doi of Japan waiting in the aircraft on February 25, 2008 that will return him to Houston at the NASA Kennedy Space Center's Shuttle Landing Facility. He and the other crew members took part in a terminal countdown demonstration test, or TCDT, in preparation for the launch of space shuttle Endeavour scheduled for March 11. AFP PHOTO/NASA PHOTO/HO ++RESTRICTED TO EDITORIAL USE++ (Photo credit should read -/AFP/Getty Images)
AFP/Getty Images

In this photo released by NASA, space shuttle Endeavour commander Dominic Gorie, left, and pilot Gregory Johnson pose for a photo with Endeavour's solid rocket booster and external tank in the background prior to entering the orbiter for a simulated countdown at the Kennedy Space Center in Cape Canaveral, Fla. Monday Feb. 25, 2008. The Endeavour astronauts are at KSC for a dress rehearsal for their scheduled launch March 11 on a flight to the international space station.(AP Photo/NASA, Kim Shiflett)
AP

In this photo released by NASA, space shuttle Endeavour mission specialist Takao Doi of the Japan Aerospace Exploration Agency gets help from a technician, right, with his launch and reentry suit as mission specialist Robert Behnken looks on in the white room near Endeavour's open hatch prior to entering the orbiter for a simulated countdown at the Kennedy Space Center in Cape Canaveral, Fla. Monday Feb. 25, 2008. The Endeavour astronauts are at KSC for a dress rehearsal for their scheduled launch March 11 on a flight to the international space station.(AP Photo/NASA, Kim Shiflett)
AP

This picture provided by Nasa shows US space shuttle Endeavour Mission Specialist Takao Doi (L) of Japan getting his launch and entry suit adjusted on February 25, 2008 at Kennedy Space Center, Florida, during a practice countdown as fellow crew member Robert Behnken waits behind Doi. Doi, Behnken and the other five crew members are at KSC for several days of training along with a simulated countdown to launch in preparation for their planned March 11 launch. AFP PHOTO/NASA PHOTO/HO ++RESTRICTED TO EDITORIAL USE++ (Photo credit should read -/AFP/Getty Images)
AFP/Getty Images

This picture provided by Nasa shows US space shuttle Endeavour Mission Specialist Takao Doi (L) of Japan getting his launch and entry suit adjusted on February 25, 2008 at Kennedy Space Center, Florida, during a practice countdown as fellow crew member Robert Behnken waits behind Doi. Doi, Behnken and the other five crew members are at KSC for several days of training along with a simulated countdown to launch in preparation for their planned March 11 launch. AFP PHOTO/NASA PHOTO/HO ++RESTRICTED TO EDITORIAL USE++ (Photo credit should read -/AFP/Getty Images)
AFP/Getty Images

In this photo released by NASA, space shuttle Endeavour mission specialist Takao Doi, of the Japan Aerospace Exploration Agency, gets help with his boots during suitup at crew headquarters at the Kennedy Space Center in Cape Canaveral, Fla. Monday Feb. 25, 2008. The Endeavour astronauts are at KSC for a dress rehearsal for their scheduled launch March 11 on a flight to the international space station. (AP Photo/NASA, Kim Shiflett, HO)
AP

In this photo released by NASA, space shuttle Endeavour mission specialist Takao Doi, of the Japan Aerospace Exploration Agency, tries on his helmet during suitup at crew headquarters at the Kennedy Space Center in Cape Canaveral, Fla. Monday Feb. 25, 2008. The Endeavour astronauts are at KSC for a dress rehearsal for their scheduled launch March 11 on a flight to the international space station. (AP Photo/NASA, Kim Shiflett, HO)
AP

This picture provided by NASA shows technicians watching as the doors are closed on the US space shuttle Endeavour's cargo bay containing the Japanese Experiment Logistics Module on February 25, 2008 at Kennedy Space Center, Florida, on launch pad 39-A. The shuttle's crew is at KSC for several days of training along with a simulated countdown to launch in preparation for their planned March 11 launch. AFP PHOTO/NASA PHOTO/HO ++RESTRICTED TO EDITORIAL USE++ (Photo credit should read -/AFP/Getty Images)
AFP/Getty Images

This picture provided by NASA shows technicians watching as the doors are closed on the US space shuttle Endeavour's cargo bay containing the Japanese Experiment Logistics Module on February 25, 2008 at Kennedy Space Center, Florida, on launch pad 39-A. The shuttle's crew is at KSC for several days of training along with a simulated countdown to launch in preparation for their planned March 11 launch. AFP PHOTO/NASA PHOTO/HO ++RESTRICTED TO EDITORIAL USE++ (Photo credit should read -/AFP/Getty Images)
AFP/Getty Images

This NASA handout photo shows US space shuttle Endeavour Mission Specialist Japanese Takao Doi as he gets suited up on February 25, 2008 at Kennedy Space Center, Florida's crew quarters for a practice countdown. Doi and the other six crewmembers are at KSC for several days of training along with a simulated countdown to launch in preparation for their planned March 11 launch. AFP PHOTO/NASA PHOTO =GETTY OUT= (Photo credit should read NASA PHOTO/AFP/Getty Images)
AFP/Getty Images