Guardian Angel retires after 41 years of service
Retired Chief Master Sgt. Paul Koester, 58th Rescue Squadron chief enlisted manager, shadows an Airman participating in a training scenario Oct. 22 at Nellis Air Force Base, Nev. At the time of his retirement, Koester was the oldest enlisted member actively serving in the Air Force, as well as the longest serving Pararescue Airman in history. (U.S. Air Force photo by Airman 1st Class Jake Carter)