NYC: Open to Others
Not every fight goes without a hitch but it was a good thing that SHIELD anticipated that the fight might spill into the streets. And boy, did it go out. AIM was a vast army and they began moving into the city, using whatever tech they'd stolen to their advantage to start wrecking havoc. They had world domination on the mind and they were determined to make sure it happened. And they also weren't all that concerned about how many people got hurt or killed along the way.
The X-Men were warned about the possible dangers and SHIELD's relationship with Xavier caused them to ask for support while their own team focused on cutting off the head of the cobra. But there were others that were willing to step up and take on the role of hero. And then there were those that were ready to pick a fight. Whatever their motivation, AIM was going to learn that even with their great numbers, this was a fight they weren't going to win.
They were just going to have to learn the hard way.