U.S. Air Force Senior Airman Tyler Marketon, 19th Air Support Operations Squadron tactical air control party specialist, watches as an A-10C Thunderbolt II attacks simulated targets during a close air support exercise, April 13, 2017, at Camp Grayling, Mich. 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)