a SFOOand its Eniwetok Field Office have had continuing responsibility for AEC admin- istration, support, control of funds, and inspection of the Commission's various contractors concerned with tests. Control and direction of the scientific program has been assigned to personnel of LASL, with major participation by LASL and other scientific contractors. At the time agreed for beginning of the operational period, the Commission designates the JTF Commanderas its special representative, and grants him full authority to act for the Commission in all matters which concern the successful execution of the approved plan. This authority is operational in nature, and does not transfer any of the continuing adminis- trative responsibilities of the SFO Field Manager, Eniwetok Field Office, or the normal responsibilities for technical direction of laboratory components participating in the tests, During past operations the JTF comprised four task groups: Scientific, Army, Navy, and Air Force, The AEC organization responsible for construction, support, and operation activities functioned as a part of the Scientific Task Group. At conclusion of Operation Ivy, the desirability of separating the direct AEC functions from the scientific activities was accepted, and for Operation Castle an additional AEC Base Facilities Task Group was formed with responsibility for performing the AEC administrative, construction, and operation functions, The Scientific Task Group has been commanded by a person selected by the scientific organizations, approved by AEC, and acceptable to the Joint Task Force Commander, Its staff has been made up principally of members of the staff of J-Division, Los Alamos Scientific Laboratory, supplemented by military personnel on detail to the Laboratory. The AEC Base Facilities Task Group will be staffed by personnel of SFOO andits Eniwetok Field Office, supplemented by other AEC personnel as required. The Task Group Commander will be selected by the Manager, SFO, approved by the Commission, and acceptable to the JTF Commander. Construction, support, and operation functions have been accomplished through SFO-AEC contract, Continental Tests / The original concept of such tests was that they would be held solely to support weapons development. Because of this purpose and even more essentially because the AEC cannot be TS disassociated from final responsibility for nuclear tests conducted inside continental United ! L States, full field responsibility has been assigned to an AEC representative as Test Manager, acting as Executive Agent for all participating Agencies and Departments. Continental tests have been conducted by a multiple-agency group generally known as the Test Organization. Participants have included: LASL, UCRL, and Sandia Laboratory; DOD and all branches of the Armed Forces; AEC's Divisions of Biology and Medicine, DMA, and Information; the Federal Civil Defense Administration, the U.S. Weather Bureau, the U.S. Public Health Service, and other Agencies. The Test Organization for each of the four series was headed by the Manager, SFO, as Test Manager, responsible for over-all conduct of the tests. As finally developed for Upshot- Knothole, the organization included Deputies for Scientific Operations, Military Operations, and Support Operations. The Deputy for Scientific Operations has been the Director, JDivision, LASL, andhis organization has been divided into three groups: Weapons Develop- ment, Weapons Effects, and Civil Effects. DIVAN 40 Logistical support—including engineering design, we ee