Astronaut Sherwood Springer prepares for an underwater test at Weightless Environment Training Facility (WETF) in response to the discovery of problems with the 04/13 deployed Syncom IV (LEASAT) communications satellite. Activities, Bldg. 29, WETF for the STS-23/51D Extravehicular Activity (EVA) Simulation for Syncom IV, 04/14/1985. 1. Shuttle - Simulation (SYNCOM IV) 2. Astronaut Jerry L. Ross - Simulation (SYNCOM) 3. Astronaut Sherwood C. Spring - Simulation (SYNCOM IV) JSC, Houston, TX