California Army National Guard Spc. Mark Thomas from the 270th military police company; 185th Military Police battalion, 49th Military Police Brigade, sprints to the finish line of the Unknown Distance Ruck March during the 2014 Best Warrior Competition at Camp Roberts on Oct. 21. The Unknown Distance Ruck March tests the competitors' ability to accurately navigate across harsh terrain and complete a series of weapons familiarity tests while carrying a full ruck sack. (U.S. Army National Guard photo/Sgt. Ian M. Kummer/Released)