Countdown clocks are holding at T-20 minutes, a planned 10-minute hold. All technical systems remain “go” but weather remains “red” for thick clouds. Launch still is scheduled for 11:26 a.m. EDT for the final flight of the Space Shuttle Program.
With all four astronauts aboard space shuttle Atlantis, the Close Out Crew sealed the hatch for flight and are completing the break down the White Room before departing the launch pad.