obviously, the darkness is impeding the investigation here. >> sure, what they will start is the point of entry. how did the shooter and his or her assistant, how did they get in in the first place, dogs, night vision goggles, they will try to back track, try to find out, okay, what was the origin. where did this shooter or the shooter and his assistant, where did they start from? a vehicle parked in the woods they should be able to find? these are the things you can't wait until daylight. the it is dangerous, if there is a second person out there, it is dangerous to law enforcement and the community. that is why you see professional s.w.a.t. teams with night vision gear, helicopters, with flair, that can pick up a heat signal.