U.S. Air Force Col Joseph Sheffield (left), 28th Bomb Wing commander, returns a salute from Maj Nicholas DeFranco, outgoing 28th Comptroller Squadron commander at Ellsworth Air Force Base, South Dakota, June 15, 2023. DeFranco piloted an innovative finance appointment scheduling system that became the standard for Air Force Global Strike Command. (U.S. Air Force Photo by Airman 1st Class Yendi Borjas)