Astronaut Jerry Ross at threshold of airlock compartment following EVA

61B-08-026 (1 Dec 1985) --- Astronaut Jerry L. Ross was photographed by astronaut Bryan D. O'Connor through Atlantis's airlock as the mission specialist, fully equipped with his red-striped, white extravehicular mobility unit (EMU), moved out into the cargo bay to begin one of two lengthy extravehicular activities (EVA) on the week-long STS 61-B mission.