Honorable Kristyn Jones, performing the duties of Under Secretary of the Air Force, receives a brief about their job duties from defenders in the 90th Security Forces Group while at the A-04 launch facility near Pine Bluffs, Wyo., Feb. 20, 2024. Jones visited F.E. Warren Air Force Base, Wyo., to learn about the ICBM modernization process from Minuteman III to Sentinel. (U.S. Air Force photo by Senior Airman Sarah Post)