The Black Cats: When China shot down five U-2 spy planes at the height of the Cold War | CNN
A BRIEF HISTORY OF THE U-2 SPY PLANE PROGRAM - Lyon Air Museum
The veteran spy plane too valuable to replace - BBC Future
SR-71 Blackbird: The Cold War spy plane that's still the world's fastest airplane - CNN Style
5 secretive new warplanes the US is developing for the next big fight - Sandboxx
Military aircraft - Stealth | Britannica
Top 5 US Military Spy Planes - Eyes in the Sky | War History Online
Pentagon's new secret super-spy plane | WordlessTech
Mystery as 'top secret hypersonic 5,000mph US spy plane' spotted flanked by two fighter jets flying near Britain | The Sun
Lockheed Martin unveils potential U-2 Successor
Famed U-2 Spy Plane Takes on a New Surveillance Mission - Scientific American
Is Lockheed's Stealthy Spy Plane the Future of Reconnaissance?
U-2 Dragon Lady | Lockheed Martin
Pin on Recon Aircraft
U-2S/TU-2S > Air Force > Fact Sheet Display
The top secret military technology aboard spy planes that could be watching you | Daily Mail Online
NOT UFO | How This American Spy Plane Drove the USSR Crazy - YouTube
Lockheed Martin SR-72 - Wikipedia
Lockheed Martin's Dragon Lady At 65 | Aviation Week Network
Reconnaissance aircraft - Wikipedia
