Editing Lockheed Have Blue (section)

==Background==
In the 1970s, it became increasingly apparent to U.S. planners that, in a military confrontation with [[Warsaw Pact]] forces, [[NATO]] aircraft would quickly suffer heavy losses. This came as a result of sophisticated Soviet defense networks, which used surveillance radars, radar-guided [[surface-to-air missile]]s (SAM), and [[anti-aircraft artillery]] (AAA) to seek and eliminate enemy aircraft. Consequently, the [[Defense Advanced Research Projects Agency]] (DARPA) started a study on low-observability aircraft, seeking to design and produce an operational stealth aircraft. Five companies were initially invited, three of which bowed out early. The remaining two were later joined by Lockheed.