Airman 1st Class Thomas Siena and Airman 1st Class Dakota James, 4th Component Maintenance Squadron aerospace propulsion specialists, struggle to stay afloat during the Build-a-Boat competition at Seymour Johnson Air Force Base, N.C., Aug. 14, 2013. Several teams' cardboard and duct tape ships couldn't withstand the weight of their crews and sunk at the start of the races. (U.S. Air Force photo by Senior Airman Aubrey White/Released)