A Mach 3 YF-12A interceptor once hit a low-flying target in a historic missile test. See why speed and thermal tech still ...

Lockheed’s YF-12A was a Mach 3.2 Cold War interceptor born from the same Skunk Works lineage that produced the A-12 and SR-71 ...

The Lockheed D-21 was a Mach 3.3 reconnaissance drone. Lockheed’s Skunk Works built it in the early 1960s. Its mission: photograph China’s Lop Nor nuclear weapons test facility. The D-21 cruised above ...

Summary: Boeing’s F-15EX Eagle II, boasting remarkable aerodynamic efficiency and powered by twin GE F110-GE-229 engines, initially claimed to reach speeds nearing Mach 3. However, Boeing program ...