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Many metropolitan police departments have a large number of video cameras deployed for surveillance purposes. Commercial technologies have been developed that allow these video cameras to be used as radiation detection devices. Though not as sensitive as personal radiation detectors, cameras with this software may be capable of detecting a large source that may be used in a radiological dispersal device (RDD) or radiation emitting device (RED) to harm the public. One such technology, called GammaPix, may be able to operate seamlessly with these existing surveillance cameras so that a radiation detection network can be developed from equipment that is already in place.