What we're trying to produce with intelligence in general, whether it's signals intelligence or any other kind, obviously, are intentions and capabilities at the sort of strategic level and actual actions that people are taking that we care about and that are very interesting to us.
As you said, if somebody was hypothetically attacking us, we'd care, obviously. The communications part of it is as fast as the speed of light. It's really the amount of time it takes a human being to look at what they have and realize what it signifies.
It's very much how fast our analysts can figure out what's going on from the multitude of signals they receive and what it means. Regarding the reaction time, I think the air force is better able to answer that, but so far we haven't missed anybody approaching our borders.