WEBVTT

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We need a way to safely detect
explosive threats on people

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and in their bags and we have to do this
without physically searching them or

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impacting thir flow through the transit system.
Currently their are no solutions to solve

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this challenging problem and this is why the
Department of Homeland Security Science

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and Technology Directorate has a program to mitigate
the explosive threat to surface transportation.

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Through innovative technologies that
are designed to work together

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and provide a layered approach to security
throughout the transportation system.

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Basically we are taking a curb to
platform approach to security.

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Curb to platform sensing, is the idea that
we are going to distribute sensors

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at various points from the parameter of the
facility to the platform. So from the time

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you step out of the cab, to the time
you get on the train or a bus

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there's sensors that are keeping track
of subjects in the system.

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This does a few things for us.
First it allows us to get

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multiple looks of a subject for better detection.

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Second, it makes it more difficult for a
subject to evade a sensing system.

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If a subject knew that all of our sensors were
say, only at the front door of a facility

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he knows he only needs to beat the sensors in that spot.

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Finally, it recognizes that there are many security environments that we must

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protect in a mass transit system.

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So the layered sensor archetecture would be a system
that's constantly updating the risk level that it observes.

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So from the moment someone steps into a facility and
it starts collecting observations, it's going to have

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some assessment of what it thinks the risk
level is and as that person proceeds

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through the subway system and additional
observations are collected

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the system is going to update that risk level.

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This operational environment is by far the most challenging
from an explosive threat protection standpoint.

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And a focused long-term investment as well
as a coordinated program working with

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TSA and our surface transportation stakeholders will allow

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us to continue to make the breakthroughs we
need in achieving our goal of better protecting

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the nations surface transportation systems
and the traveling public.

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[Music]