RAFC retreat ceremony honors 9/11 victims Published Sept. 20, 2022 By Staff Sgt. Eugene Oliver 501st Combat Support Wing Public Affairs RAF CROUGHTON, England -- The 422d Air Base Group held a 9/11 retreat ceremony at RAF Croughton, England, Sep. 9, 2022. Airmen and guests participated in the ceremony to honor those who lost their lives during the September 11th terrorist attacks.