Col Heather Cook, 319th Mission Support Group commander, recieves 319th Civil Engineer Squadron guidon from Lt Col Matthew Stanford, 319 CES commander, during the 319 CES change of command ceremony as Stanford relinquishes command July 3, 2019, on Grand Forks Air Force Base; North Dakota. The 319 CES operates and maintains base infrastructure. (U.S. Air Force photo by Senior Airman Elijaih Tiggs)