Sgt. Elizabeth M. Azcuenaga explains to 1st. Lt. James E. Shelton how to properly feed GAU-21/A .50 Caliber Machine Gun ammunition in order to reduce double feeds and jams in preparation for a Joint Terminal Attack Control training scenario Dec. 15, at Marine Corps Base Camp Pendleton, Calif. Azcuenaga, a Donnelly, Idaho, native, is a weapons and tactics instructor with Marine Light Attack Helicopter Squadron 169, Marine Aircraft Group 39, 3rd Marine Aircraft Wing. Shelton, a San Luis Obispo, California, native, is an aerial observer with HMLA-169, MAG 39, 3rd MAW. (Marine Corps photo by Cpl.

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Sgt. Elizabeth M. Azcuenaga explains to 1st. Lt. James E. Shelton how to properly feed GAU-21/A .50 Caliber Machine Gun ammunition in order to reduce double feeds and jams in preparation for a Joint Terminal Attack Control training scenario Dec. 15, at Marine Corps Base Camp Pendleton, Calif. Azcuenaga, a Donnelly, Idaho, native, is a weapons and tactics instructor with Marine Light Attack Helicopter Squadron 169, Marine Aircraft Group 39, 3rd Marine Aircraft Wing. Shelton, a San Luis Obispo, California, native, is an aerial observer with HMLA-169, MAG 39, 3rd MAW. (Marine Corps photo by Cpl. April L. Price/ Released)

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Photo credit: © AB Forces News Collection / Alamy / Afripics
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