U.S. Air Force Maj. Tyler Ellison, U.S. Air Force Thunderbirds Air Demonstrations Team operations officer, speaks to Layla Reed, a child in the Arizona Make-A-Wish program, at Davis-Monthan Air Force Base, Ariz., April 11, 2014. The Thunderbirds pilots autographed books for children in the Arizona Make-A-Wish program during Heroes' Day. (U.S. Air Force photo by Airman 1st Class Betty R. Chevalier/released)