Neither of the FCS bomber packages have flak effects in, although they do have missions. The missions i both, the same as the Hurricane, tend to be much more simple, with no or very few additional effects or objects.
FSPassengers does, I believe? But they only operate within FSPaxX warzones and only there within set (and fairly limited) parameters. The most common one I have seen people using appears to be the freeware add-on, although I've not used it myself.
Ian P.