Shells

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A U.S. Air Force F-16 Fighting Falcon fighter aircraft assigned to the 18th Aggressor Squadron takes off from Eielson Air Force Base, Alaska, Oct. 6, 2014, during RED FLAG-Alaska 15-1. RF-A is a series of Pacific Air Forces commander-directed field training exercises for U.S. and partner nation forces, providing combined offensive counter-air, interdiction, close air support and large force employment training in a simulated combat environment. (U.S. Air Force photo by Tech. Sgt. Joseph Swafford Jr./Released)

Spent shell casings pile up as a soldier fires his weapon down-range during weapons qualification on Fort Riley, Kansas, July 26, 2011. The soldier is assigned to the 1st Infantry Division’s Combat Aviation Brigade. U.S. Army photo by Sgt. Roland Hale

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