formation with another aircraft. >> in the case of an air space intrud intruder, a blackhawk would be first to intercept, flying alongside the offending aircraft and escorting it to the ground, where federal agents would be waiting. >> they're going to first be shocked to have a large aircraft like this come up very close to them. and secondly, they're going to come to the realization that something's wrong. >> on our tour, we got our own surprise, although this was a welcome one. a fleet of military helicopters appearing in the distance and then heading for metlife stadium, where military aircraft will perform ceremonial duties on sunday. an exception to the no fly rule and a stunning one. the border agents say they basically plan to stay on the perimeter, so they won't be hovering over the game itself.