The Naval Security Group Command, under the command of the Chief of Naval Operations, performs cryptologic and related functions; provides, operates, and maintains an adequate Naval Security Group; approves requirements for the use of existing Naval Security Group capabilities and resources; coordinates the execution of approved cryptologic programs; exercises command authority over, and is responsible for the primary support of, the shore activities of the Naval Security Group Command as a naval service-wide system; and provides such other activities and resources as may be assigned. Naval Security Group Activities [NSGA] and Detachments [NSGD] under the Commander, Naval Security Group Command, perform Naval Security Group functions as assigned.