Since this is all we are hearing about and everyone has a theory I thought we may as well have a few more. Then why not mine first. If a pilot had someone break into the cockpit, what might he do. Is it a stretch to think if he had a minute or two could he reprogram the computer to take the airplane off it's path. Maybe to save people on the ground or attract attention from the ground. If he thought he could regain control he wouldn't crash the plane.