Chief Master Sgt. Bryan Ford, 512th Maintenance Squadron superintendent, uses a stopwatch to to time the flight time of a wooden model airplane during a model flying competition at the Delaware Technology Student Association State Conference April 25, 2018, at the Delaware State Fairgrounds in Harrington, Del. The flying event was divided into two categories, middle school and high school. (U.S. Air Force photo by Senior Airman Zachary Cacicia)