Along these lines, the F-35 will employ a variety of US and allied weapons. The F-35 is designed to replace aging fighter inventories including U.S. Air Force F-16s and A-10s, U.S. Navy F/A-18s, U.S. Marine Corps AV-8B Harriers and F/A-18s, and U.K. Harrier GR. 7s and Sea Harriers.