 and they see something of concern to them, an open window, people milling on the roof of a building. It's probably just spectators, but you don't know. Their immediate communication is to the on-ground counter-sniper response team, and that usually consists of a Secret Service agent and local law enforcement to say, hey, this is the address of the building because they've surveyed them. They know what the addresses are. We need somebody to get up to the fifth floor of this building. We've got an open window. Or we have people up on the roof.