I've modified the F-4E to be "Bombable-ready", which is just a matter of making a few edits to the submodels and *-set XML files. Assuming I did it right, the cannon and 6 bombs should work properly in "Bombable" scenarios. For more information on this FlightGear add-on, see
http://wiki.flightgear.org/Howto:Adding ... r_Aircraft
I haven't tried the add-on myself, so the F-4E hasn't been tested.
edit: Just tested it, and the bombs appear to work in the AI scenario.