U.S. Air Force Chief Master Sgt. Chad Ballance, 355th Medical Group superintendent, speaks during a Veterans Day assembly at Richard B. Wilson K-8 School, Tucson, Ariz., Nov. 7, 2014. Ballance spoke about veterans who paid the ultimate sacrifice to protect the safety and freedoms of the U.S. (U.S. Air Force photo by Airman 1st Class Chris Massey/Released)