Doclassified Cc ( -DOD DIR 5200.10 put is less likely and capobilities (3), (4) and (5) most likely would be exercised in the event of open hostilitics between the United States ond the USSR, It is believed thet information as to the operations of JTF SEVEN and the results thereof would be of more practical value to the Soviets than hindering or impeding the operations 2. SECURITY: Security of classified information is the normel ree sponsibility of Unit Commanders but this responsibility must be reevaluated in the Pacific Proving Ground whore these operotions are dealing with atomic energye The responsibility of each individual in properly safeguarding clrssified information concerning atomic energy and in preventing its compromise by careless talk or correspondence must be understood by all military ranks and civilians. 3 GENERAL CONCEPTION; The general conception of the measures to provide security during the non-operational period are generally the same as during operational periods except where local conditions render them inepplicable. QO, These measures are as follows: ENIWETOK ATOLL is under the general protection of CINCPAC. be ENIWETOK ATOLL is closed to all vossels, aircraft and personnel except those cleared for access in accordance with the provisions estabe lished by CINCPAC 020, dated 1 April 1952, Ce All assigned personnel will be cleared for loynity and security ad Reguintions governing security published by the DOD and the AEC in accordance with the varying degrees of responsibility. continue to apply to mombors of JiF SEVEN, (1) APR 205-1 and AFR 205-6. (2) Headquarters, JI¥ SEVEN Sccurity Momoranda Espoinnge Acte Atomic Energy Act of 1946 AEC-DOD Classification criterias e. Commanders are responsible for security training of membors of their commands, Prior to the commencomont of the operational phase all personnel will be required to pass a basic security examination, prepared and distributed by Headquarters, JI¥ SEVEN, f. During the intorim phase an officer will be designated as Security Officer whose duties will include security training, enforcement of security rogulations and act as sccvurity linison with Task Group 72 and 4&C Security Offices in the Pacific Proving Ground. 4, PARSONNEL CLEARANCES: All persornel having access to classifiod information will be cleared in accordance with AFR 205=6, datod 26 april 1954 and CJTF SEVEN Security Momoranda, Se CLASSIFICATION: "Classificetion Guide for Operction C.STLE" con~ cerning 111 pertinent classification criteria will be used until rescinded . T.SK GROUP 7.4 . OFRS PLAN NO, 454 LNYEX B r and replaced. Be2 Declassified DOD DIR 5200.10