NASA Challenger Mission STS-41-B

NASA Space Shuttle Challenger Mission STS-41-B footage, narrated by members of the mission crew. NASA Astronauts Bruce McCandless II and Robert L. Stewart preparing for the first untethered EVA spacewalk; entering airlock and preparing spacesuits, Astronaut Vance D. Brand in BG. Stewart cleaning his helmet visor. Vance reading off checklist as McCandless and Stewart prepare spacesuits. Vance exiting the airlock chamber aboard the Space Shuttle Challenger. McCandless and Stewart wearing full spacesuits in airlock chamber.