Gen. Alfred J. Lyon, utilized Sikorsky R-4 and R-6 helicopters during the end of World War II. The 6th ARU(F) was one of six ARU(F) helicopter units which operated in the Pacific Theatre under the ...
The Sikorsky R-4 became the world's first mass-produced helicopter in 1942. - TONE: "If a man is in need of rescue, an airplane can come in and throw flowers on him, and that's just about all.
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