James Dolan, 733rd Civil Engineer Division environmental flight conservationist, ducks before driving his boat beneath a low bridge leading to a training area at Fort Eustis, Va., June 4, 2013. The platform sites are close to important training areas for Fort Eustis, making the mission of discovering nutria paramount to mission success. (U.S. Air Force photo by Airman 1st Class Austin Harvill/Released)