This could be alot cooler
The interface was good but the game got boring pretty fast. However your drawings and animation were great, so I think you could make this into a much better game.
Here is my suggestion:
Make it a first person from a plane were your the gunner and you shot planes and missles comming at you. You could make the plane lok like it was moving by animating he background, and since the player whouldn't control the movement of the plane it whould look as good as if you were moving. I think that whould make a much cooler game and you could reuse alot of the graphics and action script.