Lt. Gen. Mark D. Kelly, Air Force deputy chief of staff or operations, delivers his speech on “The Force We Present” during the Air Force Association’s Air, Space and Cyber Conference Sept. 17, 2018, in National Harbor, Md. The Air, Space and Cyber Conference is a professional development conference that offers an opportunity for Department of Defense personnel to participate in forums, speeches, seminars and workshops. (U.S. Air Force photo by Airman 1st Class Zoe M. Wockenfuss)