U.S. Air Force Airman 1st Class Diante Cooper, 19th Air Support Operations Squadron Tactical Air Control Party specialist, watches and communicates with an A-10C Thunderbolt II during a joint close air support exercise at Camp Grayling, Mich. April 13, 2017. To further build interoperability and hone their unique skillset, members of the German air force Air Ground Operations Squadron travelled to the U.S. to partner with the 19th ASOS and conduct a close air support exercise working with A-10C Thunderbolts IIs and F-16 Fighting Falcons. (U.S. Air Force photo by Airman 1st Class Daniel Snider)