III. ARMY-NAVY COOPERATIVE PROGRAM DOD's decision relative to the joint cooperative effort between Army and Navy to develop IRBM Nr 2 did little to deter the Redstone group's development  plans, although in the very recent past they had been studying to satisfy either Army or Air Force requirements. Since the Navy was now in the program,  the configuration of the proposed missile would have to change drastically to suit shipboard or possibly submarine operations. Development Plans As may be recalled, the Secretary’s decision was made on 8 November 1955 and by the 28th of the month General Medaris presented a tentative  development plan to OSD-BMD that had been previously approved by JANBMC. The Navy, too, had reacted quickly, for on 17 November a Special Project  Office (SPO) was created with Rear Admiral W. F. Raborn appointed director. SPO was established to handle problems associated with the ship-launched  version of the JUPITER weapon system 29 . Prior to the start of actual development operations, the Army and Navy worked out ground rules as to which service would accomplish a specific function  or task. According to DOD, both services were to agree upon military characteristics (MC's) and performance for a single land - and sea- based missile.  ABMA was responsible for developing the basic missile, and operational objectives for both employment concepts were to "be accomplished  simultaneously rather than compromise Navy work to gain an early land ______________________________  

29. Prop, 23 Nov 55, subj: Army-Navy IRBM Tentative Dev Plan - FY 56- FY 57, in ABMA Ref Book, subj: JUP, Part I, Tab B-3; JUP Dev Plan, FY 58, 29 Sep 56, Hist Off files; House Rpt Nr 67, Op. cit., p. 24.