A CH-47F Chinook helicopter carrying equipment and supplies makes its way to the Kahiltna Glacier in Denali National Park, Alaska, April 26, 2013. U.S. Soldiers with the 1st Battalion, 52nd Aviation Regiment helped the National Park Service transport equipment and supplies to the Kahiltna Glacier base camp before the start of the Mount McKinley climbing season. (U.S. Army photo by John Pennell/Released)