Continuity mistake: Gallagher looks out at his wrecked B17 from the ruins, and the aircraft's tail section is facing the camera. Several minutes later, he looks again from the same vantage point, and the burning plane's nose and engines are now facing the camera.
Continuity mistake: While Savage struggles with Kemp in the cockpit, the bomber goes into a nosedive. The next shot is stock footage that shows several people jumping from the plane and deploying parachutes. But when we cut back to the interior set, no one in Savage's crew has bailed.