U.S. Air Force Staff Sgt. Kenneth Parrish, 66th Rescue Squadron special mission aviator from Nellis Air Force Base, Nev., shows a visitor the controls inside a U.S. Air Force HH-60 Pave Hawk helicopter during the 2014 Wings of Freedom Open House, Sept. 13, 2014. The Pave Hawk is a highly modified version of the Army Black Hawk and is used for personnel recovery, search and rescue, medical evacuation, disaster response and several other support roles. This is the first time Altus AFB has opened its gates to the public since 2012. (U.S. Air Force photo by Senior Airman Franklin R. Ramos/Released)