A CH-47F helicopter from D Company, 1st Battalion, 52d Aviation Regiment, flies along the crevasses of Kahiltna Glacier April 27, 2015, on the way to the 7,000-foot high base camp for climbers attempting to summit Mount McKinley. Soldiers and Chinooks from the D/1-52d "Sugar Bears" made short work of delivering several thousand pounds of equipment to base camps at 7,000 and 14,000 feet for the 2015 climbing season, saving money and time for the National Park Service and gaining invaluable experience operating at altitudes and in terrain not available for training missions outside Alaska. (Army photo/John Pennell)