thereofand explainedtheirmission. On or beforethis date, the Marine Detachments, as indicatedin the previousparagraph,reportedaboafifor duty. Task Group 7.5 also organizedan admimstrativeofficeat the Long BeachNaval Shipyardfor the purposeof processingali JTF-7personnel who were reportingaboardthe 4 major ships. There the tasksof identification,registrationand routingof properlyauthorizednewcomers was accomplished, as well as the storageof incomingclassifieddocuments for laterdeliveryto the ship securityofficers. In addition,the physicalprotectionof classifiedfreight,equipmentand materialwas supervisedbythis officeafter its arrivalby air, rail, truckor courierwithin the lhits of the shi~ami. Until sailingthe on 29 February1948, the Task Group 7.5_istrativesectionat Long Beach devoteda considerable portionof its attenticmto the formidabletask of furnishingthe necessarysecurity for the masses of heterogeneousscientificequipment,toolsand instrumentsthatwere daily arrivingfor delxveryto the various laboratories, shops,officesand storagespacesaboardship. As classified materialreachedtheseworkroomsand storageareas,Marine guards were posted,entrancestheretowere limitedand the ~iExclusion~ and “ ‘!Restrictedn areas afloatestablished. Throughoutthe month of February,Task Forcephotographers engaged in documental ~ilm work were presentin the shipyard. All photographs were takenin the presenceof a Marineofficer. Beforeand after exposure,