One more argument in favor of armed pilots. We all know that some states already have in force legislation allowing to shut down hijacked civil aircraft in certain circumstances. Generally if they might be a threat to populated areas or objects of high importance. Which means you have a good chance to get a missile into the engine if guys on the ground are not convinced that crew still have control over the flight path (or if your destination is no in the middle of Sakhara desert).
So the only chance for people on board to survive is to keep cockpit clean, and gun in skilled hands can help this a lot.
Aerobatics could help, of course, but some of your passengers may not survive it either.
For some reason I never could get a list of those states. I know about India, Czech Republic, Estonia and US and, probably, Russia. Anyone know about the others?