NASA Astronaut and Air Force Col. Mike Hopkins speaks to the audience during a question and answer session at the Live on Green event held in Pasadena, Calif., Dec. 29, 2017. Col. Hopkins was selected by NASA as an astronaut in 2009, and was a member of the Expedition 37/38 crew. He has logged 166 days in space. ( Air Force photo/Sarah Corrice)

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Keywords: astronaut, center, green, hopkins, iss, laafb, live, mike, missile, nasa, pasadena, smc, space, systems