CFS3 Mission--B17 Strike On Invasion Fleet. The Germans are building up an invasion fleet. Your job is to escort the bombers so they can make a bomb run in the hopes of hitting a few ships. Once they are done you are free to use your bombs and rockets on the ships. The bombers can't get in low and it's not suggested that you try either; it's a sure fire way to get yourself killed. B17 from AvHistory is required. By Sean Doran.