Airmen from the 821st Contingency Response Group out of Travis Air Force Base, Calif., get positioned to attach a Humvee to a U.S. Army CH-47 Chinook at Alpena Combat Readiness Training Center, Mich., during exercise Northern Strike, Aug. 9, 2016. Northern Strike is a large-scale exercise coordinated by the Michigan Army National Guard and features Army, Marine Corps and Air Force working together for total force integration. (U.S. Air Force photo/Senior Airman Amber Carter)