Bulgarian and Army key leaders discuss the areas in which the soldiers will conduct a series of tactical movements during Exercise Peace Sentinel at Novo Selo Training Center, Bulgaria, Nov. 21, 2015. Peace Sentinel is a joint exercise that focuses on interoperability between the Bulgarian and forces. (Photo by Staff Sgt. Steven M. Colvin/Released)

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Photo credit: © AB Forces News Collection / Alamy / Afripics
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Keywords: .., 1abct, 2/7, 3id, 5/7, ako, army, atlantic, atn, bulgaria, cav, dvids, fort, front, frontline, interoperability, nato, oar, operation, page, resolve, soldiers, stewart