#USArmy Sgt. Timothy Jenkins climbs down from an obstacle during the Joint Multinational Training Command's #BestWarrior Competition, Grafenwoehr, Germany. If you like this photo, stay tuned for muddier versions as the Army teams up with #ToughMudder at the Pittsburgh/Ohio event tomorrow! What's the toughest obstacle you've overcome? (#USArmy photo by Gertrud Zach)