Secretary of the Air Force Heather Wilson addresses the audience at the Space and Missile Systems Center’s lecture series, Airmen Everywhere, during a visit to Los Angeles Air Force Base in El Segundo, Calif., Dec. 14, 2017. The Space and Missile Systems Center, a subordinate unit of Air Force Space Command, is the center of technical excellence for developing, acquiring, fielding and sustaining military space systems. ( Air Force photo/Van Ha)

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Photo credit: © AB Forces News Collection / Alamy / Afripics
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