It looks like it goes out the back pannel and either feeds to right return ramp or right orbit. If it feeds to the right orbit it creates a combo shot with the vuk and also repeated shots to side ramp. I hope it does!!
Also what exactly will the fire button control? At first I was hoping the ball somehow fed to the small enterprise and that was a cannon in disguise (like the one in acdc). But after seeing better pics it just looks like a molded ship. Does the fire button make the vengeance fire? Does the vengeance even fire at all?
If anyone knows any of these things please let me know.