KENNEDY SPACE CENTER, FLA. - In the Orbiter Processing Facility, a worker checks out part of the equipment in the airlock, at one end of Discovery’s payload bay. The airlock is sized to accommodate two fully suited flight crew members simultaneously. Support functions include airlock depressurizat

Credit lineKENNEDY SPACE CENTER, FLA. - In the Orbiter Processing Facility, a worker checks out part of the equipment in the airlock, at one end of Discovery’s payload bay. The airlock is sized to accommodate two fully suited flight crew members simultaneously. Support functions include airlock depressurization and repressurization, extravehicular activity equipment recharge, liquid-cooled garment water cooling, EVA equipment checkout, donning and communications. The outer hatch isolates the airlock from the unpressurized payload bay when closed and permits the EVA crew members to exit from the airlock to the payload bay when open.. NASA/KSC, 2004-01-22. Public domain. ID: KSC-04pd0093.