 All remaining combat-coded F-15Cs and F-15Ds are operated by the Air National Guard.The USAF is upgrading 178 F-15C/Ds with the AN/APG-63(V)3 AESA radar, and equipping other F-15s with the Joint Helmet Mounted Cueing System as of 2006.In 2007, the Air Force planned to keep 178 F-15C/Ds along with 224 F-15Es in service beyond 2025.