[M GO BLUE!!!]

What bothered me:

Spoiler

They have a hit on Jack. In carrying out the hit they kill everybody around him, throw a hood on him & remove him to a private area where they can kill him. In my non-professional assasin head, I would think that one more bullet on the scene would have neatly wrapped things up right there without prolonging the chance of getting caught or stopped.

But then that's just another minor plot hole.