The Secretary of Defense, attracted by the idea of a low cost fighter, gave funding to Riccioni for a study project on the Lightweight Fighter program (LWF, which became the F-16). The DoD and Air Force both went ahead with the program, stipulating that it have a "design to cost" basis no more than 3 million per copy over 300 aircraft. The USAF considered the idea of a "Hi-lo" mix force structure and expanded the LWF program. The program soon went against the Fighter Mafia's vision: it was not the stripped-down air-to-air specialist they envisioned but a heavier multi-role fighter-bomber with advanced avionics, an active radar, and radar-guided missiles. Harry Hillaker, an F-16 designer, remarked that he would have designed the plane differently if he had known it would become a multimission aircraft.