I've been saying for sometime now that those planes would never have been hijacked had some passengers been armed. I have a concealed carry permit and carry most of the time. No one even knows but everyone around me is a lot safer even if they don't know about it.
I live several miles out in the country. The cops would get there in time to pull a sheet over my body except it will likely be over the bad guy's body. A plane is the same. The cops can't do a thing for you. The passengers will have to protect themselves.
You idiots that think that bullet hole will bring down a plane watch too much TV. A friend of mine flew a lot of missions in Vietnam and came back with a lot of bullet holes in his plane - never crashed once.