14 C.F.R. § 420.53 Control of public access.
Title 14 - Aeronautics and Space
(a) A licensee shall prevent unauthorized access to the launch site, and unauthorized, unescorted access to explosive hazard facilities or other hazard areas not otherwise controlled by a launch operator, through the use of security personnel, surveillance systems, physical barriers, or other means approved as part of the licensing process. (b) A licensee shall notify anyone entering the launch site of safety rules and emergency and evacuation procedures prior to that person's entry unless that person has received a briefing on those rules and procedures within the previous year. (c) A licensee shall employ warning signals or alarms to notify any persons at the launch site of any emergency.
Title 14: Aeronautics and Space
PART 420—LICENSE TO OPERATE A LAUNCH SITE
Subpart D—Responsibilities of a Licensee
§ 420.53 Control of public access.