The Grumman F11 F Tiger, later designated F-1 1 A, was a new-technology, supersonic follow-on to the F9F Cougar and Panther fighters. It went to the Fleet in 1957 but served actively only until the spring of 1961, while the type remained in training squadrons until 1967. The Navy's Blue Angels operated F11 Fs from 1957 to 1969, and F11 Fs also served at China Lake as advanced Sidewinder and countermeasures test platforms. Some of the last F11 F fuselages were used as targets and test items for weapon-designator and carrier-firefighting programs. This aircraft, BuNo 138647, is one of two advanced, up-engined F11 F-1 F Super Tigers delivered in 1956; first designated an F11 F-2, it set the world altitude record of 76,939 feet on 18 April 1958. During the 1970s, it was on display at the main gate of the Naval Air Facility China Lake, and it is the only remaining aircraft of its type.