persons the stringent security responsibilities falling upon each Task Force member. Toward the accomplishment of this end, a highly successful program was devised. Each member of the Task Force was required to take an open-book, written examination which was based on JTF SEVEN Security Memorandum Number 2 entitled Basic Security Responsibility. The memorandum dealt, in detail, with the general principles of security and each individual was required to achieve a perfect score on his examination, even if this meant taking the test more than one time. In addition to this test, all Task Force personnel whose regular duties would require them to handle classified material were required to take a second examination in the same manner as the one just described. This test was based on JTF SEVEN Security Memorandum Number 3 entitled Safeguarding Classified Information. This memorandum dealt specifically with the established procedures for the safeguarding of classified material. In addition to these examinations, the security program included the dissemination, through task group commanders, of the official AEC-DOD releases with directives to periodically caution all personnel that only such officially released information could be mentioned in their correspondence. An effective poster program was also instituted to remind individuals of their security responsibilities. The fifty-six dif- ferent kinds of colored posters emphasized the various general security principles included in the security memoranda. 45 Security