Astronauts Vande Hei and Acaba at the Arlington National Cemeter

CCP Astronauts - NASA T-38 Aircraft Operations

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CCP Astronauts - ISVT BES Phase 2 Training

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NASA astronaut Zena Cardman inspects a spacesuit helmet

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NASA astronaut Don Pettit works on maintenance activities

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CCP Astronauts - ISVT BES Phase 2 Training

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NASA media portrait of new 2017 Astronaut Candidate

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NASA media portrait of new 2017 Astronaut Candidate

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Official Astronaut Portrait of Greg Johnson in ACES suit

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NASA media portrait of new 2017 Astronaut Candidate

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NASA media portrait of new 2017 Astronaut Candidate

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NASA astronaut Jonny Kim works on spacesuit maintenance

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SHEPARD, ALAN B., ASTRONAUT - MISC. - PA

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CCP Astronauts - NASA T-38 Aircraft Operations

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Astronauts Vande Hei and Acaba at the Arlington National Cemeter

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CCP Astronauts - NASA T-38 Aircraft Operations

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CCP Astronauts - Water Survival Training at the Neutral Buoyancy

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CCP Astronauts - NASA T-38 Aircraft Operations

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CANDID - ASTRONAUT LIND, DONALD L. - JSC

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SUITED-UP- ASTRONAUT JOHN W. YOUNG - TRAINING

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Astronaut Suni Williams is pictured during maintenance activities

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NASA media portrait of new 2017 Astronaut Candidate

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CCP Astronauts in Boeing CST-100 Trainer

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Astronaut Suni Williams takes a selfie portrait

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Astronauts Vande Hei and Acaba at the Arlington National Cemeter

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