. The JointSecurityGroup garrisonat EngebiIsland conductedsecuritysweepsof the islandsto the northwest of that island. It also maintained12 hour observationposts to the seawardand on the lagoonside. The securitypersonnelat Aomon Islandmade sweepsof the islandsnorth as far as ~13gebi Islandand to the southas far as Runit Island. The otherislandsof the atollwere inspectedby JointSecurityGrouppersonnel from EniwetokIsland. 5. The SecurityControlof Photography.In order that therewould be no leakageof informationfrom photographicsourcesto unauthorized personnelor agencies,all photographyrelatingto operationSANDSTOm was subjectedto rigid securitycontrols. a. PersonalPhotograp~. For purposesof simplif@ng the task o“fadministering such controls,personalphotographyin the operational not only the making area was prohibited. This injunctioncontemplated of photographswith privatelyownedequipmentbut with camerasissued to membersof all governmentagencieswho had not been designatedas officialphotographersor photographicscientists~ the Commanderof JotitTask Force Seven. The possessionof photographicequipmentor or scientistswithinthe suppliesby other than officialphotographers operationalarea was strictlyforbidden. b. OfficialPhotography. 10 Importanceof Controls. From the raw materialsto the finishedproductit was imperativethat all photographic 45 SectionII