Analysis of Alternatives. At the conclusion of the Concept Refinement phase in December 2007, the Joint Program Office JLTV project manager intended to transition the program directly into the engineering, manufacturing, and development phase. However, as milestone approached, it became clear that the Under Secretary of Defense for Acquisition and Sustainment John Young would not support the JLTV program entering into the acquisition process at that time. He denied the request and instructed the Army and the Marine Corps to develop a more vigorous Technology Development (TD) phase. The DoD released a Request for Proposal (RFP) for the TD phase of the JLTV program on 5 February 2008. Industry proposals were due 7 April. TD phase contract award was postponed in July 2008. The following companies and partnerships responded to the TD phase RFP: Boeing, Textron and Millenworks General Dynamics and AM General (as "General Tactical Vehicles") Force Protection Inc and DRS Technologies (officially rejected on 14 August 2008) BAE Systems and Navistar Northrop Grumman, Oshkosh Truck and Plasan Lockheed Martin, BAE Systems Land & Armaments Global Tactical Systems, Alcoa Defense and JWF Industries Blackwater and Raytheon On 28 October 2008, the Pentagon narrowed the field of vendors to Lockheed Martin, General Tactical Vehicles and BAE Systems/Navistar. Each team was awarded contracts worth between $35.9 million and $45 million to begin the next phase of the program, which at the time was stated to be worth $20 billion or more. The Northrop Grumman/Oshkosh group contested the awards, but their protest was denied by the Government Accountability Office. On 1 June 2010, it was confirmed that all three contractors had delivered seven JLTV platforms for TD phase evaluation. The U.S. Army appeared to have reduced its support for the program at this time, omitting JLTV numbers from its tactical vehicle strategy published in June 2010. However, the U.S. Army clarified that JLTVs are slated to both replace and complement the Humvee. JLTV's TD phase was completed in May 2011. In February 2011, the JLTV Program Office announced the award of the follow-on Engineering and Manufacturing Development phase contract would be delayed until January or February 2012 because the Army changed requirements for the JLTV, requiring it to have the same level of under body protection as the Mine-Resistant, Ambush-Protected All-Terrain Vehicle (M-ATV). Updated specifications for the program included reducing the payload options to the Combat Tactical Vehicle (CTV) configuration, which would