Detection Technologies
With the advent of new weapons technology and trends in
terrorist activity, the homeland security community must adapt with
better detection systems. The ability to detect potential threats,
minimize casualties, and root out false alarms is paramount. There
have been some improvements in recent years in the handheld
equipment used for detecting chemical and biological agents.
Chemical detectors can analyze a sample in seconds if there is
enough chemical present to test. However, even with these
advancements, continuously searching large areas is difficult. One
novel approach to this challenge is the use of canine scent
detection of chemical and biological warfare agents.
Canines have long proven their worth as scent
detectors, filling the technology gap in areas involving cadavers,
narcotics, explosives, accelerants, and search and rescue. Their
ability to work in varying environments, their portability, and
their acute sense of smell have made canines invaluable assets. With
the real possibility that destructive chemical and biological agents
will become a weapon of choice for terrorists, a new potential use
for proven canine scent detection technology has emerged.
The process of training canines to detect chem/bio
agents is the same used to train dogs to detect explosives. However,
proximity to these agents would be a real health concern for the
canines and their handlers if actual agents were used. Two questions
that must be addressed are “What materials can be used in the scent
training that will not harm the canine or its handler?” and “How may
canines be used in the field to find deadly agents without producing
a ‘canary in the mine’ effect?” Companies
such as Signature Science, based in Austin, Texas, have led the
field in canine training programs for chemical and biological agent
detection. Canine teams are trained to detect scents related to
chemical and biological agents that may include precursors,
degradation products, and production-associated materials. In
addition, the canine handlers are trained in threat agent
identification and response. Due to the
hazardous nature of the agents, the primary function of the canine
is to detect agents before release (in mail, luggage, shipping
boxes, clothes, and on a body). The canines are not intended to be
used in cases when it has already been determined that an agent is
present. The handler is the vital other half of the
detection team and is the first responder at a scene. Since dogs
trained to detect multiple scents do not indicate which agent they
have found, a handler’s knowledge of the threats is important for
initial observation. After the dog has recognized that a target
scent is present and the handler has assessed the possible nature of
the agent, a handheld detector could be used to show exactly what
substance has been found. At Signature Science
we have personnel who could be the hazmat response team, but
normally we would use whichever local resources would respond to
such an incident—police, firefighters, emergency medical services,
state police, or a Civil Support Team. A
handheld detector helps the team get as much information as possible
for a response protocol to be initiated. The handler team could use
it after withdrawing the dog and donning proper personal protective
equipment. However, we suggest that the responding hazmat unit carry
the instrumentation. In this regard, the incident would be handled
like a bomb incident. After the dog discovers a threat, the dog and
handler team leave and the explosive ordnance disposal unit comes in
with the proper safety equipment to identify and disarm the weapon.
Conclusions
The chem/bio terrorist attacks and false alarms observed in the
past decade have demonstrated the potential for high financial and
human tolls. Routine screening by chem/bio canines could detect the
agents before their release, preventing deaths and minimizing, if
not preventing, contamination and eliminating the costs associated
with response to the events. Startup and maintenance costs of a dog
team are minimal compared to recovering the cost of even one
incident, and the deterrence a canine team creates by maintaining
the appearance of a hardened target is immeasurable. |