PETERSON AIR FORCE BASE, Air Force astronaut Col. Jack "2Fish" Fischer answers questions from Airmen and family members at Air Force Space Command Headquarters at Peterson Air Force Base, Colorado, Nov. 13, 2017. In September, Fischer returned from a 136-day mission on the International Space Station in September, where he participated in hundreds of scientific experiments and two spacewalks. Air Force Space Command has administrative responsibility for all six Airmen currently serving at NASA. ( Air Force photo by Dave Grim)

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