All four STS-135 astronauts are now aboard space shuttle Atlantis. The Close Out Crew soon will prepare to close the hatch for flight and verify the integrity of the hatch seal before breaking down the White Room and departing the launch pad.

Weather still is 30 percent “go” as forecasters watch a band of thunderstorms moving from southwest to northeast across Florida. While weather remains dynamic, Launch Director Mike Leinbach told the launch team earlier, “We do have a shot at this today.”

There are no major technical issues and launch remains on schedule for 11:26 a.m. EDT for the final flight of the Space Shuttle Program.