AFSC Request to Complete FEVS Published July 11, 2022 By Amy Schiess and Angela Startz Air Force Sustainment Center TINKER AIR FORCE BASE, Okla. -- Mr. Dennis D'Angelo, Executive Director, Air Force Sustainment Center, Tinker Air Force Base, Oklahoma, makes a personal request to members of AFSC to complete the Federal Employee Viewpoint Survey before the July 15, 2022, deadline.