A list of deployment dates for Tech. Sgt. Bob Kaster, 455th Expeditionary Aircraft Maintenance Squadron C-130 Compass Call Aircraft Maintenance Unit communications navigations and mission systems technician, is written on the door of his office at Bagram Airfield, Afghanistan Jan. 12, 2017. The 41st Electronic Combat Squadron and the 755th Aircraft Maintenance Squadron based out of Davis-Monthan Air Force Base, Arizona, have been continuously deployed in support of Operation Enduring Freedom, and now Resolute Support Mission, since 2002. They have been at Bagram since 2004. (U.S. Air Force photo by Staff Sgt. Katherine Spessa)