Channel modulators take any video signal — from a security camera to your favorite television station — and make it viewable on every television in the house.

Stranger One: "Hank" : On a street near my house, they have been repairing a faulty sewer main and a slightly older gentleman holds the "SLOW" sign to signal to the cars passing by.

Northrop Grumman will also integrate current wide Angle optics, digital imaging, and low-power digital signal processing (DSP), House says.