Many of the aircraft we think of when we talk about stealth technology were developed by Skunk Works, a research and development branch of Lockheed Martin that worked on top secret projects for the CIA and military beginning after World War II. This includes the U2 high-altitude spy plane, the SR-71 Blackbird, and the F-117 Nighthawk. As the Cold War demanded increasingly faster and higher-flying aircraft to stay ahead of Soviet missile and radar technology while still being able to observe and document Soviet activity, Skunk Works developed first the U2 and then the Blackbird for these missions. However, these technologies were not enough to evade missiles and ultimately the engineers developed fuselage and wing designs that lowered the radar cross-section of a plane to the point that it would not appear on radar at all, or seem to be a small bird or other object instead of an aircraft. Combined with radar absorbing paint, these angular aircraft designs reflect radar signatures away from the radar station and prevent the enemy from seeing the aircraft approach. The following documentary talks about the history of Skunk Works and their contributions during the Cold War.