Two-time Olympian Sgt. Spenser Mango of the U.S. Army World Class Athlete Program removes his shoes and leaves them on the mat, wrestler’s way of signaling retirement from competition in their sport, during the 2016 U.S. Olympic Wrestling Team Trials on April 9 at Carver-Hawkeye Arena on the University of Iowa campus in Iowa City. (U.S. Army IMCOM photo by Tim Hipps)
