Stats: Atlas 5 and Delta 4 histories and backlogs (updated April 20)

This gallery of U.S. Air Force photos show technicians, wearing protective SCAPE suits, initially check for hazardous hypergolic fuel vapors around the X-37B spaceplane on the Shuttle Landing Facility runway and the subsequent tow of the vehicle to its newly-renovated hangar at the Kennedy Space Center.

Watch a time-lapse video of the Atlas 5 rocket’s rollout at Cape Canaveral on Feb. 28, on the eve of liftoff with the GOES-S weather satellite.

The United Launch Alliance Atlas 5 rocket was transfered from its assembly building to the pad at Cape Canaveral’s Complex 41 today for Thursday’s launch of the U.S. military’s third SBIRS GEO missile warning satellite.