McNamara's Bargain As Secretary of Defense, Robert McNamara brought a rigorous system of quantitative analysis to the Pentagon. He believed that if he asked the right questions, he could make correct judgments. It was Robert McNamara who advised the U.S. to get involved in Vietnam, who advised the U.S. to win the war with a huge ground force, and who ultimately advised the U.S. to pull out. It was also Robert McNamara who advocated the Tactical Fighter Experimental (TFX) a multi-service combat airframe that would meet both Navy and Air Force needs. With a standard fighter airframe, McNamara forecast that the U.S. would save millions of dollars. The Air Force and the Navy objected to the idea of a single airframe for both service branches but were overruled. The General Dynamics F-111A/B won this multi-service competition. A scheme evolved that General Dynamics would build the Air Force F-111A, and Grumman Corporation would build the F-111B for the Navy. The heart of the aircraft's offensive power was to be the new Phoenix missile system. To meet the specifications of both the Air Force and Navy, General Dynamics produced the first aircraft with an encapsulated ejection seat, a variable sweep wing, an after-burning turbofan engine, terrain-following radar, and a sea-level supersonic capability. This aircraft was supposed to operate both from bases on land and from carriers with equal facility. But, just as the generals and the admirals predicted, too much was asked of the experimental aircraft. One model of the plane, the F-111B, grew so much in weight (over 77,500 pounds) that it became too heavy for carrier operations. This program was quickly canceled. The other model, the F-111A, went through a torturous development period, at times being referred to as "the swing-wing Edsel." Eventually, the F-111A became an outstanding Air Force fighter-bomber, but left the Navy without a fleet defense fighter -- until the F-14 Tomcat. Needless to say, Robert McNamara's intended millions in savings turned into hundreds of millions in overruns.