Army Staff Sgt. Adam Cathrall, forward observer assigned to the 218th Maneuver Enhancement Brigade, Army National Guard clears a weapon jam on a M240B machine gun during the crew-served weapons familiarization night training at Fort Jackson, , Sept. 15, 2016. Cathrall is training 30 Soldiers from multiple transportation companies on dismounted security drills and crew-served weapons in preparation for their qualification next summer and to stay current with convoy security. ( Air National Guard photo by Tech. Sgt. Jorge Intriago)

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Keywords: .., .50, army, caliber, carolina, guard, gun, light, m2, m240b, m249, machine, national, night, sc, scarng, scng, soldiers, south, transportation