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

76K views · 1.3K reactions | The U.S. Marine Corps CH-53K King Stallion is the most powerful helicopter in the United States military. Sikorsky Test Pilot, Sean Maloney, walks you through some key features of this heavy-lift workhorse. | Sikorsky | 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

18K views · 963 reactions | German version of the CH-53D for German Army Aviation Corps. It's crazy how much different this sounds to CH-53D with EAPS (Engine Air Particle Separator) installed. Video credits : @nazgul.53 | Defence Express | Facebook

Sikorsky CH-53GA Luftwaffe German Air Force Takeoff | Aero Admirers