Report : Restoring American Power (Recommandations for 2018-2022)

(…) the Air Force should embrace a “high/low mix” of fighter aircraft. Very expensive fifth-generation technology is not needed in every scenario. The current fourth generation fleets of F-15 and F-16 fighters will remain in the force for years to come. Critical investments in these legacy fighter aircraft, including capabilities to facilitate manned-unmanned teaming, should be made over the next five years to keep these aircraft relevant in the future.