Maj. Gen. Darryl Burke, left, Air Force District of Washington commander, greets Lt. Gen. Hamad Muhammed Thani Al Rumaithi, right, chief of staff of the United Arab Emirates’ Armed Forces, during the Chief of Defense Conference on Joint Base Andrews, Md., Oct. 17, 2016. The conference is held annually and brought together senior military leaders from 50 countries to meet and discuss mutual security challenges, improve joint relationships and foster security cooperation. (U.S. Air Force photo by Airman 1st Class Valentina Lopez)