I don't think that these criminals are so ADVANCED as they are retro. Police were expecting an 800 yard shooter in the second episode, as opposed to the takedown, 1960's era rifle which was more suited to a shorter range. That's how they discovered the brass.
Plus, someone is giving these guys credit cards and equipment.
I haven't watched last night's episode, though.
Doc, however, is currently one of my favorite characters on TV.