Our cover of Oct. 7, 1957, showed the first Lockheed L-188 Electra mid-range transport after completion of structural assembly at the company's plant in Burbank, California.

Developed from the Lockheed L-188 Electra commercial airliner, the P-3 has served the military needs of various nations including the U.S., China, Japan, and South Korea.

Developed from the Lockheed L-188 Electra commercial airliner, the P-3 has served the military needs of various nations including the U.S., China, Japan, and South Korea.