the ammo load out for the guns on the 17s may by accurate. A few nights ago on the History Channel they had a show about air power, featuring bombers. One of the bits in this show was about the Memphis Belle, first 17 in the 8th to complete a tour.
Anywho at one point the person narating the story (from the pilot's POV) mentions the .50s, saying something about the ammunition is cheap (.06/rd I think I he said) but they only carry 1000rds for each gun. I would like to see ammo counters in the gun stations (even though it's not that realistic =) just so I know when I'm about to run out. It's a real pain to have a bandit about to run up your tail and you squeeze the trigger and only hear the dull click of the trigger.