A flight crew with 2nd Battalion 135th Aviation Regiment, Colorado National Guard, conduct pre-flight checks on a UH-72A, Lakota light utility helicopter, during Exercise Maple Resolve 14 (EX MR14) here, May 23. Approximately 5,000 troops are participating in EX MR 14, including close to 4,000 Canadian Army Soldiers, 450 Royal Canadian Air Force members, 450 American troops and 100 British soldiers. (Photo by Sgt. 1st Class. Julio A. Nieves, 326 MPAD/Released)