The F-15EX is the latest development of the F-15E Strike Eagle. It features modernized avionics, radar, weapons systems, and new engines packed inside a 20,000 flight hour airframe. Fly-by-wire flight controls enable payloads on stations 1 and 9 (previously unused), allowing the F-15EX to carry up to 12 air to air missiles, though AMBER racks could theoretically increase this to 20.