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    Astronaut trains for triathlon in space

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Astronaut trains for triathlon in space

Dr. Sanjay Gupta trains for a triathlon with NASA Astronaut Suni Williams at Johnson Space Center's ISS mockup facility

Astronaut trains for triathlon in space

Dr. Sanjay Gupta trains for a triathlon with NASA Astronaut Suni Williams at Johnson Space Center's ISS mockup facility