In this Sikorsky video, a CH-53K pushes its flight envelope, proving bigger doesn’t always mean slower. During an Oct. 19, 2016, flight test, the CH-53K King Stallion helicopter reached 170 knots. The big heavy lift helicopter is designed to carry more than 27,000 pounds over a mission radius of 110 nautical miles, providing much greater performance than the existing CH-53E in an aircraft not much larger.