Honorable Kristyn Jones, performing the duties of Under Secretary of the Air Force, tours the A-04 launch facility near Pine Bluffs, Wyo., and receives briefings about the facility from missile maintenance team Airmen 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)