the organization was broken into three operating units with Task Unit 3 Head- quarters and a Deputy for Eniwetok, where, until the 30th of June, the majority of projects were based, and Forward Area Commands at Bikini and Johiston Island. The Bikini staff was reduced to one officer and one enlisted man after shot Yucca, since only one active project remained there after removal of launch site for Teak and Orange to Johnston Island. Most of the personnel thus relieved, along with a small number of personnel from Eniwe- tok, formed the Jofinston staff, which after July 1 became the principal scene of DOD operations. The Commander, Task Unit 3, Eniwetok, supported by a small staff, supervised the activities of the directors of 7 programs and 51 projects grouped under them in the EPG. During this phase of the operation, approximately. 80 Task Unit 3 staff personnel and 900 project personnel participated. The peak strength was reached on April 12, when 665 TU-3 personnel were present in the EPG. After July 1, the Eniwetok staff and project personnel were appreciably reduced, leaving only those participating in the subkiloton shots, Quince and Fig. These offices were closed on August 26 with the completion of the roll-up. Task Unit 3 staff members began arriving at Johnston Island on June 1 for this phase of Hardtack. The largest build-up of personnel occurred in early July. Thirty-one TU~3 staff members and approximately 230 project personnel were involved for the two shots at Johnston. TU-3 offices were closed on August 23, 12 days after the final shot, Orange. Staff personnel for both phases of Hardtack were furnished by Field Command, Armed Forces Special Weapons Project, with a small number of augmentation personnel furnished by Headquarters, AFSWP, and from the _— various Armed Services upon the request of the Chief, AFSWP. Project personnel came from the agencies listed in Table 3.1. .The Programs undertaken were comprehensive, including maximum efforts on five DOD shots (Yucca, Wahoo, Umbrella, Teak, and Orange), extensive activities on four development shots and participation by one or more projects on Unfortunately, command transmitter failure on shot Yucca caused loss of all significant data from the canister array. Aircraft instrumentation was very successful, however. Failure of ship's power on two target destroyers prior to the Wahoo event resulted in some data loss. Aside from these two failures, the objectives outlined in Sec. 1.3 were attained, although some projects participating on development shots had to repeat their experiments or change their activities to other shots due to schedule or yield changes of some devices. The Task Unit 3 mission was accomplished with but one major operational difficulty. The move of the launch site for Teak and Orange from Bikini to Johnston after completion of construction and the arrival of most of the personnel and equipment presented a formidable problem. It was not insurmountable, however, and JTF 7, Holmes and Narver. and TU-3 agencies successfully met the first new ready date for firing on July 31. The shortage of real estate was a hindrance to some agencies. Careful management of manpower was necessary to properly maintain Task Unit 3 staffs at all operating locations. Although minor problems were presented throughout the operation, satisfactory solutions were found for all, often with the assistance of Task Group 7.1 staff agencies. Special problems were presented by the projects, with 41 personnel, stationed at considerable 120