[djf]

I Suspect we are already far beyond one or two quarters ahead.

Didn’t the SR-71 Blackbird make it’s debut like ‘71?

RBTLines.

[Hardastarboard]

According to Wikipedia the SR-71 debuted in like 1965. It was amazingly advanced for its time.

[KC-10A BOOMER]

I spent 3 ½ years at Beale AFB in the 349th AREFS refueling the SR-71. A very impressive airplane in-flight that leaked approximately 1,000 lbs of fuel an hour on the ground. They built it without fuel bladders, but at cruising altitude and speed it sealed right up. You could always tell when the aircraft was about topped off, because it would sweat fuel down the fuselage.