[blam]

"We had the sr71 in the 60s mach 4, I think we know something about high speed missiles."

The SR-71 was an airplane....still the fastest airplane ever.

[T.B. Yoits]

The SR-71 was an airplane....still the fastest airplane ever.

While the SR-71 was fast, especially for an aspirating engine aircraft, the X-15 rocket was much faster. Also, seismic sensors have recorded pulse-jet aircraft at speeds faster than the SR-71.