Air Force Lt. Col. David F. Hetzler has retired from the U.S. Air Force after serving honorably for 28 years.

Hetzler was last serving as instructor mission crew commander with 966th Airborne Air Control Squadron, Tinker Air Force Base, Okla.

He is a 1988 graduate of Tippecanoe High School, Tipp City, Ohio. He earned a bachelor's degree in 1998 from Park University, Parkville, Mo.