A CH-53K from Air Test and Evaluation Squadron 21 (HX-21) performs a recovery rigging evaluation of a CH-53K Engineering Development Model without engines, most gearboxes and tail pylon. This expansion of the aircraft’s capabilities, including understanding the flight characteristics and load dynamics in such a heavy lift, ensures the Marine Corps can safely execute a Tactical Recovery of Aircraft and Personnel (TRAP) mission in the future. U.S. Navy Photo by Erik Hildebrandt.