I have heard from local friends in Law Enforcement, there were many officers and SWAT in the immediate vicinity of the restaurant way before the perps showed up. The police can only interfere when a law has been broken, so the impending fight/shoot-out (whatever you want to call it...I like fuster-cluck) actually occurred. Once it did, the LEO's came in hot and heavy, and IMHO reduced the number of lives lost. This is a sad situation that many in the media are going to blow up to suit their own agendas, i.e. - I've already seen the media comparisons to Boston, etc.