US Army Spc. Adam L. Cayton and Spc. Sheign K. Hopson, both indirect fire infantryman with 1st Battalion, 506th Infantry Regiment, 4th Brigade Combat Team, 101st Airborne Division Air Assault, make adjustments to a 81mm mortar system during a live fire at Afghan Combat Outpost Kaligu, in Paktya Province in Afghanistan, Sept. 12, 2013. US Army photo by Sgt. Justin A. Moeller, 4th Brigade Combat Team Public Affairs.