Lockheed Martin’s Advanced Development Programs, or Skunk Works, discussed the future of the SR-72, a Mach 6 strike and reconnaissance aircraft.
Source: Lockheed Martin Announces Progress in Hypersonic SR-72 Aircraft Program
Ginny Keller's Blog
Lockheed Martin’s Advanced Development Programs, or Skunk Works, discussed the future of the SR-72, a Mach 6 strike and reconnaissance aircraft.
Source: Lockheed Martin Announces Progress in Hypersonic SR-72 Aircraft Program