1st Lt. Brandon Teeple, 72nd Operations Support Squadron airfield operations officer, and 1st Lt. Madison Rauenbuehler, 72nd Medical Support Squadron Tricare Operations and Patient Administration Flight commander, hold signs showing their selected causes for the 2020 Combined Federal Campaign (CFC) at Tinker Air Force Base, Oklahoma, Oct. 14, 2020. The CFC allows service members; federal employees; federal and military retirees and federal contractors across the government to contribute to their choice of over 20,000 charities. (U.S. Air Force photo by Paul Shirk)