AEC, AEC contractcr compenents, and TG 7.1, in coordination with the staff of JTF SEVEN and AEC, Washington, Task Group 7.5 is a composite organization, personnel being assign- ed from various offices and divisions of the Santa Fe Operations Ofice, AEC. The principal contributer is the Eniwetck Field Office, which has AEC responsiblility for all direct and contract activities at the Pacific Proving Grounds. This field office accomplishes its functions of enginesring, design, ccnstruction, operation and mainte- nance through a contractor, Holmes & Narver, Inc, That Ccntract AT- (29-2)-20, is, in effect, an cperation plan in that it is the instru- ment for providing the principal services required in completing the mission of Task Group 7.5. During non-operational periods, personnel who comprise TG 7.5 perform their regularly assigned AEC tasks at the same time they are planning and preparing for the ferthcoming operation. In an AEC capacity, the Eniwetok Field Office administers the architect-engineer-construction-management contract, develops budget programs, coordinates detailed actions between the contractor and those requiring services, and performs the other functions related to AEC responsibility for the Proving Grounds. Personnel of the AEC Com- munications branch participate in the planning and preparation of the communications installations for the approaching cperation. Personnel of the AEC Budget and Finance Divisions coordinate in planning and establishing funding and fund control procedures, cost Special Rereview Final Determination accounting systems and related activities. Personnel of the AEC Office of Test Operations participate in the long-range planning of test operations, coordinate participation by various agencies, assist in developing and completing operating agreements, and engage inj detailed planning for operational phases of the forthcoming operption., Staff support of other SFO offices and divisions is available and is used as required in acccmplishing these various functions. Ati the time when the AFC transfers its autherity to the Task Force Copmander for execution of its operation plan, Task Group 7.5 becofies operational, the normal duties of its personnel are assimi- lafed into their functions in the TG 7.5 organization, and execu- tion of previously. developed operation plan and the assigned mis- sion become the objectives of the entire Task Group. When the operational period is terminated, personnel. revert to their normal functions and concluding operational activities of the Task Group are handled through AEC channels. For Operation Castle, the Commander, TG 7.5, is the Director, Office of Test Operations, SFO, and his deputy is the Field Manager, Eniwetok Field Office, SFO. 4, Organization and Command Relations &. Organization of Task Force - The Organization for Operation Castle (on-site phase) is contained in Appendix I to Annex B, Joint Task Force SEVEN Operation Plan No. 3-53. AEC Organization and Command Relations as they pertain to Operation Castle sre shown on Appendix I to this Task Group 7.5 Operation Plan. Appendix II to this Operation Plan is the current Organization Chart for Task Group 7.5.

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