Graham provides huge detail on flying the SR-71. The SR-71 was very much a futuristic airplane, differing from all other aircraft in its design. The record setting flight covered 1,998 nautical miles in sixty-four minutes, twenty seconds, at a speed of 2,176 miles per hour.
"...the radar cross-section of the SR-71 was significantly lower than the numbers the B-1B bomber was able to achieve more than twenty-five years later. At cruise speed and altitude, the radar cross-section of the SR-71 represented a target the size of a J-3 Piper Cub."
In the SR-71 engines,a shockwave is established at the engine inlet. Airflow through the engines controlled by the fore and aft bypass valves. The fore bypass valves were controlled by the pilot, with the aft valves being controlled by the onboard computers. If a disturbance occurs, the inlet pressure behind the shock wave becomes too great or the spike position moves too far aft - this is termed a unstart, and is a major concern with the pilots with specific procedures for diagnosing and recovering from them.
The mission route was defined ahead of time and was flown by the aircraft computers. "The mission route was defined in terms of destination points (DP), control points (CP), and fix points (FP)." "The SR-71’s flight plan, with the DPs, CPs, and FPs for the entire mission, was contained on a 3/4 inch Mylar tape punched with holes and loaded inside the guidance group computer memory." It was practically impossible to hand-fly the aircraft smoothly and precisely enough to obtain good imagery.
In the Epilogue, Graham states that he believes the SR-71 is needed more today than it was twenty or thirty years ago.