 On 7 May 1958, USAF Major Howard C. Johnson, flying YF-104A 55-2957, broke the world altitude record by flying to over Edwards AFB.On 16 May 1958, USAF Captain Walter W. Irwin, flying YF-104A 55-2969, set a world speed record of over a course long at Edwards AFB.Flying F-104A 56-0762 over NAS Point Mugu, California, USAF Lieutenants William T. Smith and Einar Enevoldson set several time-to-climb records on 13 and 14 December 1958