Airborne Early Warning—Meet the Cold War EC-121 Warning Star
The EC-121 served well for many decades in protecting America and its allies from attack. The Lockheed Constellation entered service with the United States Army Air Forces during the Second World War in 1943 as the C-69 Constellation, and most of those were later converted into civilian airplanes under the designation Lockheed L-049 Constellation. However, the United States Navy also began to see how the aircraft could be employed for patrol and airborne early warning duties in 1949. Designated the PO-1W, it was modified to carry experimental electronic surveillance equipment, and soon proved...