Train, Advise, Assist Command-Air (TAAC-Air) maintenance advisors pose with some of their Afghan air force maintenance counterparts at an aircraft hangar at Hamid Karzai International Airport, Kabul, Afghanistan, March 2016. TAAC-Air coalition advisors work daily to train, advise, and assist their Afghan partners to develop a professional, capable, and sustainable air force. (U.S. Air Force photo by Staff Sgt. Steven Marquez/released)