U.S. Army 1st Lt. Andrew Kalna, 20th Engineer Brigade, 30th Eng. Battalion, 74th Eng. Detachment diver, waits as his team prepares his equipment during a pier repair mission at Fort Eustis, Va., Jan. 30, 2014. U.S. Army divers operate in the water from the surface to 190 feet below the waterline. (U.S. Air Force photo by Airman 1st Class Austin Harvill/Released)