special scientific missions; the determination of how and when nuclear components will be transported to the forward area; ascertaining the scope of the official observer program; and determin- ing requirements for sample return. Each of these matters is dir- ectly connected with and influences military support and requires continuous monitoring and coordination from the Operations Division. In addition to these matters, there are two other very significant areas of planning and operations which are given great at-— tention in the Technical Branch of the J~3 Division. meteorology and radiological safety. detail elsewhere in the History. These are They are treated with some (See Appendicies A and B). Closely interwoven with the problems falling upon the J~3 Div— ision were those encountered by the Logistics Division (J-4). The two major areas of concern of this division traditionally are (1) the supply and service functions for the Task Force and (2) the transportation of persons and things to and from and within the forward area, In general there arose during CASTLE planning no problems which did not find resolution. Logistical channels and supply lines were firmly established as a result of the cumulative experience from previous operations and most of the J-, planning had grown to be considered routine. Typical of the supply and service activities of the J-4 Division was the procurement of such major items as vehicles and spare parts; additional reefers to meet needs which would arise due to the basing of the Air Force Task Group on Mniwetok Island rather than at Kwajtf 32