An A10 Thunderbolt II from the 175th Wing, Baltimore, Maryland, conduct close air support training missions with joint terminal attack controllers on July 28, 2015 during Exercise Northern Strike 2015 at Grayling Air Gunnery Range in Grayling, Michigan. Exercise Northern Strike 2015 is a joint multi-national combined arms training exercise conducted in Michigan. (U.S. Air National Guard photo by Master Sgt. Scott Thompson/released)