U.S. soldiers, all combat infantrymen with 1st Platoon, Delta Company, 1st Battalion (Airborne), 143rd Infantry Regiment, Task Force 4-25, disconnect a tow-bar from the front bumper of a mine-resistant, ambush-protected vehicle on Forward Operating Base Salerno, Khost province, Afghanistan, Aug. 10, 2012. U.S. soldiers perform weekly maintenance on their vehicles to ensure mission readiness.