Senior Airman Felix Jusino, 11th Security Forces Squadron member, shoots a simulated round out of a M203 grenade launcher attachment during heavy weapons qualifications at Marine Corps Base Quantico, Va., Jan. 26, 2017. The simulated round bursts into smoke after impact giving the instructor and shooter and idea of where it hits. ( Air Force photo by Senior Airman Philip Bryant)

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Photo credit: © AB Forces News Collection / Alamy / Afripics
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Keywords: andrews, arms, base, catm, combat, corps, guns, jjoint, m240b, machine, marine, quantico