Remember: they just refuelled the plane on Hedy's orders, and the thing has a range of 700 miles, so they could potentially end up sitting in its smoke with horrendous monoxide poisoning for a good 4 hours or so.<br/><br/>EDIT: Besides, a .30 rifle bullet will not penetrate the Vampire's canopy, that's kind of the point, especially not going straight through to the instrument panel.