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In Discovery's airlock, astronaut William F. Readdy, pilot, holds up a STS-51 slogan -- "Ace HST Tool Testers" -- for still and video cameras to record. Readdy is flanked by astronauts Carl E. Walz (left) and James H. Newman, who had just shared a lengthy period of extravehicular activity (EVA) in and around Discovery's cargo bay.

STS-51 “Ace HST Tool Testers”

STS051-66-009 (16 Sept 1993) --- In Discovery's airlock, astronaut William F. Readdy, pilot, holds up a STS-51 slogan -- "Ace HST Tool Testers" -- for still and video cameras to record. Readdy is flanked by astronauts Carl E. Walz (left) and James H. Newman, who had just shared a lengthy period of extravehicular activity (EVA) in and around Discovery's cargo bay. Not pictured are astronauts Frank L. Culbertson Jr., mission commander, and Daniel W. Bursch, mission specialist.

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