HUGO, Minn.-- Participants of the 2016 Twin Cities Tough Mudder trudge through ice-cold waters in the Arctic Enema, an obstacle that exposes competitors to water filled with over 10 tons of ice in Hugo, Minnesota July16. Throughout the 10-12 mile obstacle course, racers are faced with over 20 different muddy challenges. Army Reserve Soldiers from local units provided support for the two day event. (U.S. Army photo by Spc. Claudia Rocha)