Personnel inprocess with the Resource Support Operations Center during Operation Sentinel Rampart 21-05 on F.E. Warren Air Force Base, August 31, 2021. Operation Sentinel Rampart 21-05 is an exercise overseen by Air Force Global Strike Command to test the Response Task Force capabilities of the 90th Missile Wing. The RTF exercise lasted two days and included personnel from a variety of units across the installation. (U.S. Air Force photo by Airman 1st Class Darius Frazier)