NASA Photo ID: S89-31907          File Name: 10063997.gif 
 
Film Type: 35mm CN                Date Taken: 04/18/89 
 
Title: Astronauts practice contingency EVA on GRO during simulation in JSC WETF 
 
Description: 
 
Astronauts George D. Nelson (nearest camera) and Thomas D. Akers, suited in  
extravehicular mobility units (EMUs), work with the Gamma Ray Observatory  
(GRO) mockup in JSC's Weightless Environment Training Facility (WETF) Bldg  
29.  Having achieved neutral buoyancy in the 25-ft deep pool, Nelson and  
Akers were verifying changes in handrail and portable foot restraint (PRF)  
locations made during 1985 training.  They also practiced contingency  
extravehicular activity (EVA) or unplanned GRO solar array (SA) and high 
gain  antenna (HGA) deployment, refueling and module changeouts.