Both Headquarters USAF and TAC continued to call for a multipurpose aircraft, while both Disosway and Air Chief of Staff Bruce K. Holloway pressed for a pure air-superiority design that would be able to meet the expected performance of the MiG-25. During the same period, the Navy had ended its VFAX program and instead accepted a proposal from Grumman for a smaller and more maneuverable design known as VFX, later becoming the Grumman F-14 Tomcat. VFX was considerably closer to the evolving F-X requirements. The Air Force in-fighting was eventually ended by the worry that the Navy's VFAX would be forced on them; in May 1968, it was stated that "We finally decided – and I hope there is no one who still disagrees – that this aircraft is going to be an air superiority fighter".