Bolts Tightening Bolts U.S. Army Spc. Walker prepares his vehicles, equipment, and weapons systems before a route clearance mission on Bagram Airfield, Afghanistan, Sept. 18, 2015. Walker is assigned to the 101st Airborne Division’s Company A, 21st Engineer Battalion. U.S. Army Photo by Sgt. 1st Class David Wheeler SHARE: Download: Full Size (1.79 MB) Tags: Vehicles, Photo Essays, Weapons Systems, Route Clearance Mission, Bagram Airfield, U.S. soldiers, All images Credit: Army Sgt. 1st Class David Wheeler VIRIN: 150918-A-SO125-006.JPG Photo Gallery