Cpl. Thaddeus Hairrell, 1st Battalion infantryman,

Cpl. Thaddeus Hairrell, 1st Battalion infantryman, 3d U.S. Infantry Regiment (The Old Guard), prepares to engage the enemy during a simulated combat course at The Old Guard’s Best Warrior Competition, June 29, Fort A.P. Hill, Va. During the simulated combat course, competitors engaged an unexploded ordinance device, encountered gun fire, cleared rooms in an abandoned building, detained enemy forces and administered first aid to wounded soldiers.