Participants of the 2016 Bataan Memorial Death March trek across the desert sand during their 23rd mile, March 20, 2016, at White Sands Missile Range, N.M. The march is 26.2 miles long and honors prisoners of war, survivors, and those lost during the notorious Bataan Death March in the Philippines. (U.S. Air Force photo/Senior Airman Harry Brexel)