Beginning in 2007, 179 USAF F-15Cs would be retrofitted with the AN/APG-63(V)3 Active Electronically Scanned Array radar. A significant number of F-15s are to be equipped with the Joint Helmet Mounted Cueing System. Lockheed Martin is working on an IRST system for the F-15C. A follow-on upgrade called the Eagle passive/active warning survivability system (EPAWSS) was planned, but remained unfunded. Boeing was selected in October 2015 to serve as prime contractor for the EPAWSS, with BAE Systems selected as a subcontractor. The EPAWSS is an all-digital system with advanced electronic countermeasures, radar warning, and increased chaff and flare capabilities in a smaller footprint than the 1980s-era Tactical Electronic Warfare System. More than 400 F-15Cs and F-15Es will have the system installed.