NASA Photo ID: S90-30520           File Name: 10063533.jpg
  Film Type: 35mm                    Date Taken: 03/05/90
  Title: STS-31 MS McCandless, in EMU, during EVA underwater simulation in JSC's WETF
  Description:
  STS-31 Mission Specialist (MS) Bruce McCandless II, fully suited in an 
  extravehicular mobility unit (EMU), uses a wrench to release a port side 
  latch mechanism during an extravehicular activity (EVA) underwater
  simulation  in JSC's Weightless Environment Training Facility (WETF) Bldg
  29 pool.  In  the foreground on the Hubble Space Telescope (HST) mockup is
  a Support System  Module (SSM) forward shell support structure.  Behind
  McCandless is the HST  mockup and a SCUBA-equipped diver.  Though no EVA is
  planned for the STS-31  mission aboard Discovery, Orbiter Vehicle (OV) 103,
  two crewmembers train for  contingencies that would necessitate leaving the
  shirt sleeve environment of  the crew cabin and performing chores with the
  HST payload or related  hardware in the payload bay (PLB).           
  
  Subject terms:
  ASTRONAUT TRAINING                      
  ASTRONAUTS                              
  CREWS                                   
  DIVERS                                  
  EXTRAVEHICULAR MOBILITY UNITS           
  HELMETS                                 
  HUBBLE SPACE TELESCOPE                  
  MOCK-UP                                 
  NEUTRAL BUOYANCY SIMULATION             
  SPACE FLIGHT TRAINING                   
  SPACE TOOLS                             
  STS-31                                  
  WEIGHTLESS ENVIRONMENT TRAINING         
  WRENCHES                                
  

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