“The USMC seems to have given the seal of approval to the latest CH-53 after the first marine pilot to test the helicopter commended its abilities. Lt. Col. Jonathan Morel tested the CH-53K King Stallion which is set to become the largest and heaviest helicopter in the US military. Two hundred of the rotorcraft will be procured by the USMC in a deal worth $25.5 billion.”

Source: http://www.defenseindustrydaily.com/ch53k-the-us-marines-hlr-helicopter-program-updated-01724/