A ground crewman signals the flight crew of NASA's SOFIA flying observatory to stop as other crewmen head to their positions upon SOFIA's arrival at Dryden's Aircraft Operations Facility in Palmdale, Calif.
Jan. 15, 2008
A ground crewman signals the flight crew of NASA’s SOFIA flying observatory to stop as other crewmen head to their positions upon SOFIA’s arrival at Dryden’s Aircraft Operations Facility in Palmdale, Calif.
Photo courtesy John Torres.