alein; miscellaneous radiac and radiological safety equipment; barges for mounting some of the devices; procurement of asphalt emulsion for resurfacing work on the airstrip; additional ware- housing to meet Air Force Task Group needs; many wmusual items of communications equipment; and materials for overhauling and plant- ing additional navigational aids at both Fniwetok and Bikini. The procurement of all this material was accomplished without great difficulty. The procurementof CASTLE vehicles, how- ever, does illustrate very well the day-to-day perplexities con- fronting the J-4 Division. At the conclusion of IVY the Depart- ment of the Army determined that all WW II vehicles at Iniwetok would be transferred to the Far East Command (FECOM) and be replaced at Eniwetok with the new "M" series vehicles. Though an initial estimate of CASTLE vehicle requirements was submitted for planning purposes to the D/A in January, 1953, it was not until the late Summer of 1953 that all task groups had been able to submit firm estimates of their respective requirements. Inasmuch as the J-4 Division was obligated to hold to a minimum the number of vehicles to be shipped to Mniwetok and arrange for shipment of a six-months supply of spare parts for field maintenance, the late submission of firm estimates prevented the meeting of deadlines in all cases. As a result of this experience, it was concluded in the division that firm vehicle requirements should be made known at least nine months prior to the date required on-site and that a cut-off date should be established for all task groups in the submission of 33