One thing I want to say, isolating a suspect might prove to be more difficult than one might think. In NOCO I have a gazillion persons of interest, and possibly similar incidents...in other words, while this guy is clearly targeting a certain geographical radius, and has certain factors unique to this case, you'd be surprised how often these types of things happen, nationwide. It seems like every week I'm posting suspicious incidents of people being shot in Colorado, and clearly they are all not related....point is it seems like these types of random killings are on the rise, especially as related to gangs (imo they do not just shoot at other rival gang members)...then you throw in ISIS sympathizers whose directions are simply to just "kill", mixed with other various nutjobs...it can really be a rabbit hole when you start digging. Hopefully the trail will not go cold here, because when and if it does everything becomes a needle in a haystack.