 On 5 May 2014, Sikorsky opened the S-97 production hangar during the rollout of the CH-53K King Stallion.At that point, the mostly-composite airframe was almost assembled, including some of the electrical wiring and avionics, missing elements were the transmission, drive train, engine, coaxial rotor, and pusher propeller.The S-97's first military customer is aimed to be the U.S. Special Operations Command to replace the MH-6M Little Bird.