STS-7 crewmembers during WETF training

Dr. Norman E. Thagard, mission specialist for STS-7, moves through the hatchway of the mockup of the Space Shuttle orbiter which is part of JSC's weightless environment training facility (WETF). Thagard is wearing an extravehicular mobility unit and is practicing procedures used when performing an extravehicular activity (EVA) during a flight.