Boeing–Sikorsky RAH-66 Comanche
ATTACK HELICOPTER PROTOTYPE BY BOEING AND SIKORSKY
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The Boeing–Sikorsky RAH-66 Comanche is an American stealth armed reconnaissance and attack helicopter designed for the United States Army. Following decades of development, the RAH-66 program was canceled in 2004 before mass production began, by which point nearly US$7 billion had been spent on the program.