Col. (P) Richard D. Clarke, 10th Mountain Division (LI) deputy commanding general of operations, pins the Silver Star on the chest of Sgt. Timothy Gilboe, 2nd Battalion, 4th Infantry Regiment, 4th Brigade Combat Team, 10th Mountain Division, during a ceremony Friday at Fort Polk, La. Gilboe risked his life to save his comrades during an insurgent ambush while deployed to Awatala, Afghanistan, in April. The Silver Star is the third highest combat decoration that can be awarded. It is bestowed for showing valor in the face of the enemy.