Staff Sgt. Matthew Duck, 7th Airlift Squadron loadmaster, tests the functionality of his aircrew eye and respiratory protection system while flying in a C-17 Globemaster III near Moses Lake, Wash., June 6, 2018. Duck was participating in Exercise Rainier War, which provided insights on how to better execute a tactical scenario for possible future conflicts.

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Keywords: -17, 4th, 62, 62nd, 7th, air, airlift, aw, base, drop, exercise, field, force, globemaster, iii, jblm, joint, kc-135, lewis-mcchord, mcchord, rainier, squadron, stratotanker, usaf, war, wing