Add Yahoo as a preferred source to see more of our stories on Google. A CH-47F Chinook, the Army's only heavy-lift cargo helicopter, is displayed during an open house at Joint Base San Antonio-Fort ...
The Boeing CH-47 Chinook is the US Army's only tandem-rotor heavy-lift helicopter and is the US' second-largest after the Sikorsky CH-53. Vertol initially developed it, but it is now built by Boeing.
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