Members of 319th Air Base Wing try to flip a tarp while standing on it during a team building exercise for Wingman Day held May 22, 2014, at the fitness center on Grand Forks Air Force Base, N.D. As part of Wingman Day, Airmen participated in four different activities prepared by members of the North Dakota Army National Guard such as the Tarp Flip, Ropes Course, Lava Boat and Mine Field for a team building exercise. (U.S. Air Force photo/Senior Airman Xavier Navaro)