I was trying to give the three examples of what we do for signals intelligence to give you an idea, because it just sounds like science fiction when you say signals intelligence. The machine-to-machine communications examples would be if another country launches a rocket, often they have a datalink to the ground to another machine, so it's not a human being talking. That would be a type of signal. Or, if you're flying a drone aircraft and you're controlling it, then there's a signal from your controller to that aircraft.
Those are the types of signals that we'd be interested in intercepting, obviously, and then perhaps analyzing them.