Whatever drives these guys, Michaels isn't it. There are Michaels stores everywhere - but most all their attacks are in just Montgomery County, Maryland; all of their attacks but one are within 15 miles of Washington - and all are in the Washington metro area. They have taken enormous tactical risks in continuing to attack only in an area now saturated with local, state, and federal police looking for them - when Michaels stores abound in neighboring counties they've ignored where there are few police and no big manhunt for them.
How skilled are Washington "snipers?"