●“ SECTION 13 Synopsis This section discusses the decisions arrived at in establishing the proving ground on a permanent basis and the responsibilities of the Joint Task Force in placing the installation in a standby status. The roll-up of Operation Sandstone was concerned with Post-Sandstone requirements at the proving ground involving the establishment of a security garrison; determination of the types and amount of equipment to be left at Eniwetok and that which would have to be returned; and the accomplishment of measures necessary to assure the preservation of the installations of the proving ground. The normal roll-up of Task Force equipment was accomplished in addition to the above considerations.