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 MIL-HDBK-1013/1A
<56> Is there more than one building on site? If there is only one
building on site, the flow chart branches to Element <60> since no further
IDS is required (i.e., the fence IDS is sufficient). On the other hand, if
there are many buildings within a fence enclave, IDS may be required at or
within the building to identify which one may be under attack.
<57> Is the last hardened shell layer the exterior of the building?
If reliance on the delay is offered by the exterior shell of the building, a
building interior surface IDS system capable of detecting an intruder before
penetration is required. In this case, the flow chart branches to Element
<59>, otherwise to Element <60>.
<58> Select building interior surface IDS. If the designer has
reached this point, an interior surface IDS capable of detecting an intruder
before penetration of the exterior shell of the building is required. These
IDS options are addressed in par. 5.3.4.
<59> Select interior sensors for last hardened shell. If the
designer has reached this point, an interior IDS capable of detecting an
intruder before penetrating the last hardened interior shell layer of the
building is required. Paragraph 5.3.4 addresses IDS options for this case.
<60> Does site perimeter fence have CCTV or tower guards? If it
was determined earlier that the perimeter fence has CCTV or tower guards for
threat assessment, the flow chart branches to Element <63>, otherwise to
Element <61>.
<61> Does building require CCTV? If it was determined earlier that
the building requires CCTV to reduce threat assessment related timelines, the
flow chart branches to Element <62>, otherwise to Element <63>.
<62> Select building CCTV. Paragraph 5.3.5 summarizes the CCTV
selection guidelines and refers the designer to other sources for more
detail.
<63> Does threat include covert entry/insider? If not, the flow
chart branches to Element <67>, otherwise to Element <64>.
<64> Have volumetric interior sensors been selected for forced
entry? A covert entry or insider threat implies that forced entry tactics
are not used to enter a facility. In this case, interior IDS located on the
barrier surface may not be effective. Volumetric interior sensors or on-site
guards are required to detect such threats. If these were selected earlier,
the flow chart branches to Element <67>, otherwise to Element <66>.
<65> Select volumetric interior sensor or guards. Paragraph 5.3.4
summarizes the volumetric interior sensor options referencing the designer to
other sources for more details as necessary. If on-site building guards are
to be used, the designer can go directly to Element <66>.
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