On display at the National Museum of the U.S. Air Force. With its unmistakable "Droop Snoot" nose, "Bird of Prey" is one of eight modified C-135s that was a joint project between NASA and the DoD to provide mobile tracking and telemetry as an Apollo/Range Instrumentation Aircraft (A/RIA). It became operational in Jan. 1968 and went on to serve with the 4950th Test Wing and 412th Test Wing over a 32-year career. The bulbous nose contains a steerable seven-foot antenna.