A CH-47 Chinook helicopter from the 238th General Support

A CH-47 Chinook helicopter from the 238th General Support Aviation Battalion maintains flight over Camp Grayling, Mich., during Northern Strike 15, July 26, 2015. Northern Strike combines ground and air capabilities and brings together aircraft from more than a dozen units, and ground troops from more than 20 states and four coalition countries across northern Michigan. Northern Strike is the only exercise of this size and scope for the Michigan Guard and integrates ground-based mortars and artillery weapon systems with attack aircraft to support maneuver forces on the ground. (Army National Guard photo by Master Sgt. Ron Raflik/Released)