Retired Air National Guard Chief Warrant Officer 2 Robert Hertel, laughs while sitting in front of a P-47 Thunderbolt during the Heritage Flight Training and Certification Course at Davis-Monthan Air Force Base, Ariz., Feb. 28, 2015. Hertel, a 92-year-old World War II veteran, flew the aircraft while stationed in Iwo Jima, Japan. (U.S. Air Force photo by Senior Airman Jensen Stidham/Released)