49 C.F.R. § 193.2909 Security communications.
Title 49 - Transportation
A means must be provided for: (a) Prompt communications between personnel having supervisory security duties and law enforcement officials; and (b) Direct communications between all on-duty personnel having security duties and all control rooms and control stations.
Title 49: Transportation
PART 193—LIQUEFIED NATURAL GAS FACILITIES: FEDERAL SAFETY STANDARDS
Subpart J—Security
§ 193.2909 Security communications.