Chaplain (Capt.) John Appiah and Staff Sgt. Christopher Rodriguez, 455th Air Expeditionary Wing, prepare to leave Hamid Karzai International Airport, Kabul, July 23, 2017. Since chaplains are noncombatants, their assistants, though not trained bodyguards, take on the extra responsibility of defending their chaplain if in a hostile situation. (U.S. Air Force photo by Staff Sgt. Benjamin Gonsier)