8.7K views · 816 reactions | The Sikorsky CH-53K King Stallion is a heavy-lift cargo helicopter currently being developed by Sikorsky Aircraft for the United States Marine Corps (USMC). The design features three 7,500 shp (5,590 kW) engines, new composite rotor blades, and a wider aircraft cabin than previous CH-53 variants. It will be the largest and heaviest helicopter in the U.S. military. MilitaryLeak.com | Military Leak | Facebook

19K views · 738 reactions | Watch how the CH-53K’s blades fold, making it easy to transport the helicopter by sea, air or land.The Sikorsky CH-53K King Stallion is the largest and heaviest helicopter in the U.S. military, currently being developed by Sikorsky Aircraft for the United States Marine Corps (USMC). | Military Leak | Facebook

9.1K views · 245 reactions | #OTD in 1968, Marine Lt. Col. Robert Guay and Sikorsky pilot Byron Graham performed a series of loops and rolls in a CH-53A to test the enormous Sea Stallion's maneuverability characteristics. The maneuvers were unprecedented for a helicopter of its size. | U.S. Naval Institute | Facebook