requirements. Gates shall be structurally comparable to the adjacent fence. They shall be designed to
allow traffic to pass through under positive control of the security force. A lock approved by the DOD
Component shall be used on gates not continuously manned. Hinge pins and hardware shall be
welded or otherwise secured to prevent removal.
(b) Drainage structures and water passages penetrating the barrier will be barred. This will
cause obstacles for unauthorized entry. Such obstacles will be equal to the fence itself. Some
openings to drainage structures measure more than 96 square inches: they may have a smaller
dimension greater than 6 inches. Multiple pipes each having a diameter of 10 inches or less may be
joined together. These may then be joined to the drainage culvert and used as an alternative. Multiple
pipes of this diameter may also be placed and secured in the "in-flow" end of the drainage culvert. This
will also prevent intrusion into the area.
(c) Building walls may be incorporated into the barrier system. However, they must offer
protection against intrusion equal to that of the perimeter barrier, and they must be subject to
observation. The walls must have a minimum height of 7 ft, with a barbed wire top guard sloped
outward at a 45 degree angle.
g. Clear Zone. Clear zones shall extend 12 feet on the outside and 30 feet on the inside of the
perimeter fence. Clear zones shall be free of all obstacles. They shall be free of anything that could
provide cover for an intruder, or anything that could reduce the effectiveness of the physical barrier.
Examples are topographical features, such as hills, and vegetation more than 8 inches in height.
h. Access Control.
(1) Routine/unaccompanied access to arms storage facilities will be limited to the least number
of persons designated by the unit CO. Personnel may be military or civilian. Names and duty positions
of these persons will be posted inside the arms room. They will be authorized unaccompanied access
to arms only after they have passed a command-developed background check or local files check.
These checks will be done by the area provost marshal, local civilian police, and other agencies which
might have pertinent data on file. Pertinent data is that which would reflect on the honesty or stability of
the person. Supplemental checks will be done every 3 years after assignment of new personnel. COs
will prohibit any persons on whom derogatory information is revealed from unaccompanied access to
the arms storage facility. Also, COs will relieve such personnel of those duties for which
unaccompanied access is required.
(2) A two-person rule security system may be used to control access to all arms rooms and
arms storage buildings. Two authorized persons will be present during any operation which affords
access to these facilities. These two persons will be considered present when they are in a physical
position to positively detect incorrect or unauthorized procedures. Such procedures are those related
to the task and/or operation being performed. Persons