United States Army's Physical Security Guide FM 3-19.30
Physical security is defined as that part of security concerned with physical measures designed to safeguard personnel; to prevent unauthorized access to equipment, installations, material, and documents; and to safeguard against espionage, sabotage, damage, and theft.
Security lighting allows security personnel to maintain visual-assessment capability during darkness. When security-lighting provisions are impractical, what are needed?
Additional security posts
Other security means as necessary.
Commander must ensure that appropriate physical-security measures are taken to minimize the loss of what?
and material through both human and natural threats.
What are the four types of fencing that are authorized for the protection of restricted areas?