Mark C. Lee, STS-82 payload commander, training for extravehicular activity (EVA) involved with the second servicing mission for the Hubble Space Telescope (HST), prepares to enter the Neutral Buoyancy Laboratory (NBL) water tank at NASA's Johnson Space Center (JSC). Moments later, Lee was neutrally buoyant, rehearsing some of the HST servicing tasks with a crewmate.
Credit: NASA
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