CH-53K King Stallion demonstrates first air-to-air refuelling

The Sikorsky CH-53K King Stallion has demonstrated its first air-to-air refuelling. The heavy lift helicopter, in development for the US Marine Corps (USMC), completed the 4.5h test over Chesapeake Bay with a Lockheed Martin KC-130J in-flight refuelling tanker on 6 April, says Naval Air Systems Command (NAVAIR) on 9 April.

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