I'm pretty sure a few concerned citizens with some hunting(sniping) rifles could cull the herd.
I'm also in favor of shooting lessons for those types, help them to identify and hit the target(s) they were shooting at, ideally avoiding any collateral damage.

Yes, that would be awesome. I love the idea so much I'm not sure how it could possibly go wrong. (not sarcastic)

Turn off your internet when you're not able to supervise your own bloody offspring. It's not the internet's fault your child is curious about the things in which you have failed to educated them.

Unfortunately the internet will be much more detailed in it explanation.

The other thing is in both instances, the shoe and the underpants, the bomber was subdued by the fellow passengers. They boarded from outside the US. The point being they can't pull off another spectacular like 9/11 because the passengers know it's no longer like the old hijackings and will fight back.

The reasonable thing to do is look at what has stopped terrorist campaigns in the past and learn from that. Instead of trying to lock the barn door after the cows have already escaped. What if the next guy/girl has it in a body cavity or worse surgically implanted? I think I'd give up flying altogether then.

This would never be abused, would it?

When I was taking electrical engineering some of the profs. felt that if you could program your calculator to perform the complex math then you understood it. Some would try to load the textbook into their calculator, but it doesn't help if you have to read all that text during the test. That was before all the wifi/bluetooth/texting/twits.

A couple of easy ways to get around communication are:
1) Don't use numbers, make all the derivations rely on variables x, y, z etc... They must show each step as well.
2) Create 4 slightly different tests. At first glance all the tests appear the same, but the details are different. A person who writes answers for test B on test D fails and faces discipline for cheating.

Also keep an eye out for people spending more time looking at their device than the paper. Stand around them every few minutes, they'll lose time avoiding being caught.