Unlike what you may have seen in sci fi movies, when you puncture the aluminum skin of an aircraft at altitude with a bullet it does not create a huge rip in the fuselage through which everybody in the vicinity is sucked out. It creates a neat little hole that you could patch with a wad of bubble gum - if the whistling noise is really bothering you that much.
Never figured out how they parachuted out of a diving Business Jet.
yes, and seats are bullet proof, so they are a good thing to hind behind. I’ll defer the desirability of the possibility of numerous holes in the aircraft to experts like the pilot in #6