Airmen from the 174th Attack Wing, New York Air National Guard, refuel an A-10 Thunderbolt II during Operation Northern Strike at the Alpena Combat Readiness Training Center, Aug. 16, 2014. The A-10 is from the 127th Wing, Michigan Air National Guard. Twenty-four units from 12 states and two coalition partners will participate in the three-week event. Operation Northern Strike will occur from Aug. 4 - 22, 2014, at the Alpena Combat Readiness Training Center and Camp Grayling Joint Maneuver Training Center. Over 300 Total Force fighter, bomber, mobility, and rotary sorties are planned in support of live fire exercises in order to meet stated objectives for participating units. (U.S. Air National Guard photo by Tech. Sgt. Dan Heaton)