S92-29406 (Feb 1992) --- Three mission specialists assigned to the STS-49 flight occupy temporary stations on the "middeck" of a Johnson Space Center (JSC) Shuttle trainer during a rehearsal of Endeavour's launch and entry phases. Left to right are astronauts Thomas D. Akers, Kathryn C. Thornton and Pierre J. Thuot. The three, along with four other NASA astronauts, will be aboard Endeavour in May for a week-long mission during which a satellite will be retrieved and boosted toward a higher orbit and extravehicular activity evaluations for Space Station Freedom assembly techniques will be conducted.