First Lt. Jeffrey Mattheis, 90th Operations Support Squadron missile combat crew instructor, talks to a Leadership Cheyenne class group about the 90th OSS Missile Procedures Trainer and missile operations April 22, 2016, in the MPT on Warren Air Force Base, Wyo. The MPT is a mock launch control center, which missileers use to maintain qualifications to perform missile duties. ( Air Force photo by Senior Airman Jason Wiese)

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Size: 3000px × 1993px
Photo credit: © AB Forces News Collection / Alamy / Afripics
License: Licensed
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