A Marine Corps F-35B Lightning II with Marine Fighter Attack Squadron 121 takes off for a live-fire training exercise on Andersen Air Force Base, Guam, during Valiant Shield 2018 Sept. 16, 2018. Valiant Shield is a biennial, only, field training exercise with a focus on integration of joint training among forces. ( Air Force photo by Senior Airman Zachary Bumpus)

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Photo credit: © APFootage / Alamy / Afripics
License: Licensed
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Keywords: .., air, biennial, corps, force, guam, joint, marine, navy, shield, training, valiant, vs18