Commandant as used in this part, means the Commandant of the United States Coast Guard.

District Commander as used in this part, means the officer of the Coast Guard designated by the Commandant to command a Coast Guard District.

Captain of the Port, as used in this part, means the officer of the Coast Guard, under the command of a District Commander, so designated by the Commandant for the purpose of giving immediate direction to Coast Guard law enforcement activities within the Captain of the Port's assigned area. In addition, the District Commander will be Captain of the Port with respect to the remaining areas in the District not assigned to officers designated by the Commandant as Captain of the Port.

Waterfront facility. “Waterfront facility,” as used in this part, means all piers, wharves, docks, or similar structures to which vessels may be secured and naval yards, stations, and installations, including ranges; areas of land, water, or land and water under and in immediate proximity to them; buildings on them or contiguous to them and equipment and materials on or in them.

Security zone, as used in this part, means all areas of land, water, or land and water, which are so designated by the Captain of the Port for such time as the Captain of the Port deems necessary to prevent damage or injury to any vessel or waterfront facility, to safeguard ports, harbors, territories, or waters of the United States or to secure the observance of the rights and obligations of the United States.

Area Commander, as used in this part, means the officer of the Coast Guard designated by the Commandant to command a Coast Guard Area.

Damage, as used in this part in connection with any data, information, network, program, system, or other digital infrastructure, has the meaning ascribed to “damage” under 18 U.S.C. 1030(e)(8).

Cyber incident, as used in this part, has the meaning ascribed to an “incident” under 44 U.S.C. 3552(b)(2).