E. COMMUNICATIONS MIKE Fyent Rehearsal was held on 28 October (M minus 4). This was a complete communications rehearsal] for Mar? Shot with “eadquarters of CJTF 132 moving on board the USS "STFS and all circuits activated for last minute interference checks. The rehearsal continued until 1200M on 28 Ooteber and it was found that there were several elrouit failures, which were quickly rectified at subsequent conferences. pon completion of the exercise, communi- cations returned to normal with the exception of few special cireuits aboard the USS ESTES which remained activated at the request of CJTF 132 Headquarters Communication Officer. During the few days remaining prior MIKE Day, communications checls were held every morning on all oporational] circuits, and a final and satisfactory check was held on the afternoon of M minus 1. Communications on MIKR Day were good with the exception of the tactical maneuvering circuits which failed to operate with ships near horizon distance. from the Task Group Flagship. This posed a serious problem to the Navy Task roup Commander, and it was found necegsary to use the medium frequency Task Group common voice circuit to maneuver those ships some distance away. Upon return to the Eniwetek ‘Lagoon following MIKE Shot, the afloat stage for MIKE was completed, and JTF 132 Headquarters moved ashore from the USS ESTES to PARRY ISLAND, Normal in-port ccmmunications vere quickly reestab) ish= ed with CJTF 132 ashore on parry rsa, BEST AVAILASLE aay Following MIKE Event, it was noted that there was a considerable drop in communication traffic. This can probably be attributed tc the fact that considerable of the planning for MIK" was a carry-over, and also that th> 144 -