 Lockheed and Sikorsky developed proposals for their respective designs , establishing three configurations to satisfy both the development objectives and a revised RFP based on a draft requirements document . An evaluation board studied each company 's proposal and then submitted its recommendation to a selection authority council on 6 October 1965 . On 3 November 1965 , the Army announced Lockheed as the winner of the AAFSS program . The Army perceived Lockheed 's design as less expensive , able to be delivered sooner , and a lower technical risk than Sikorsky 's <unk> . On 17 December 1965 , the Army released the final requirements document . The document added fourteen requirements that were not previously addressed by Lockheed 's proposal , including the addition of an aerial rocket armament subsystem . 
