operations it is recommended that.only the Headquarters, JTF SEVEN, and the Air Force Task Group communications requirements be provided aboard the command ship with TG 7.1 and TG 7.5 communications dispersed to other Task Force vessels, ‘Differences in communication operating procedures, security, and cryptographic regulations of the Armed Forces and the AEC constituted a major operating problem and needs resolution before fu- ture test operations. Harmonious teamwork of AEC and Armed Forces personnel prevailed throughout the operation, and special approvals and agreements enabled major problems to be overcome. However, such special non~standard arrangements created additional supervi- sory and training burdens and entailed the risk of unintentional mishandling of messages, In order to expedite message handling over the long distance military radio teletype networks, Armed Forces communication procedures were used for all Task Force traffic but special modifications were made to meet AEC needs. Reg- ulations of the AEC prohibit the use by AEC of certain cryptographic systems that are authorized and normally used by the Armed Ser- vices, Cryptographic systems required by the AEC for certain clas- ses of traffic, and normally used by the AEC on long distance wire lines in the United States, were found to be impractical for long distance radio circuits during periods of unstable radio propagation, Uniform regulations and practices are essential to rap~ id and dependable communications and it is recommended that the AEC authorize the use of communication regulations of the Armed 215