A U.S. Air Force HH-60 Pave Hawk prepares to leave Davis-Monthan AFB, Ariz., to provide security during a training scenario at Angel Thunder 18-1 in Southern Arizona on Nov. 15, 2017. Angel Thunder is a two-week, Air Combat Command-sponsored, joint certified and accredited personnel recovery exercise focused on search and rescue. The exercise is designed to provide provide training for personnel recovery assets using a variety of scenarios to simulate deployment conditions and contingencies. (U.S. Air Force photo by Staff Sgt. Andrew Lee)