Air Force Capt. Lance Coldren, 67th Fighter Squadron F-15 Eagle pilot, secures his oxygen mask in preparation for a flight during annual exercise Cope North Feb. 20, 2017, at Andersen Air Force Base, Guam. Cope North is an annual exercise which serves as a keystone event to promote stability and security throughout the Indo-Asia Pacific by enabling regional forces to hone vital readiness skills. ( Air Force photo by Senior Airman John Linzmeier/released)

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