Hi guys, a friend of mine is working on a novel. He asked me this, but I don't know the answer. Can you guys shed some light?

I'm working on my second book and I need your help with some dialog/procedures. Pair of F15s patrol over the city. How are they cleared AFTER departure? Do they get free rein to just buzz around town? I know the general speed restrictions below 10,000, are fighters beholden to that as well and if they are, would they be permitted to go balls out above 10k? Do they have to squawk transponder codes? Been listening to Livestream of ATC. Man, gripping stuff. You lucky so-and-so.

And he clarified the following:

It's not combat, just a routine patrol over the city like we have every morning at 10 am here in Portland. With so many commercial and civilian planes buzzing in and out of the airspace, I wonder if there are temporary airspace restrictions in place while they buzz around.

This vet thanks you all in advance