I think there are far more prevalent threats than ISIS, but that being said I think "ISIS" will conveniently attack whatever is required to get us pulled into another war in the middle east to control the oil. That's what all of this has been about the whole time. How many times have we bombed our "ally" Saudi Arabia? None - we are in cahoots with them, yet the 9/11 terrorists were Saudi not Iraqi or Afghan. People never questioned though and blindly accepted the call for war.
When we went to Iraq we further destabilized the entire region over there and funded and trained the terrorists who make up ISIS now. It's all a game, fear is a great way to get nations to willingly go along and for those who profit from war to keep lining their pockets at the expense of humanity.
My only hope is that more people are looking with a critical eye this time, instead of letting terror of "those people" get to them. I think with this country's record of violence, you are more likely to be targeted by some loon who was able to too easily gain access to firearms and shoot up a school or theater etc. They are just "crazy" though and not "terrorists" because they aren't Islamic ;) .. funny how that works.
Fear is a powerful weapon getting people to drop common sense and give up freedoms and all sorts of things. Will they attack New York, probably - especially if it serves the monetary interests of the war machine... sad but true.