OFF IN A BLUR A U.S. Army sergeant starts the timer and calls the finish line to synch their watches as competitors for the 2010 Army Reserve Best Warrior Competition sprint out to start the 10-kilometer ruck march before dawn on Fort McCoy, Wis., July 28, 2010. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 371727-T-IUC03-358.jpg Photo Gallery