Good question!
The problem I see is that we have a very odd domino theory, like the one in Korea: If we
don't stop the reds here, tomorrow they will be in Hawii!
If we do act as the domino effect shows, a problem will eventually emerge; someone will take a step back and see that the measures are outdated. Then they will slowly be removed as needed to sate the public's need for freedom.
Who said the thing about guns? Totally agree, all seats should have either a Beretta 9mm or Colt .45 in the armrest, released by the pilot. A few may fall in the crossfire, but fewer than if the hijacking went unabated. Kids won't get them. Gun safety before each flight- to minimize misfire deaths.
Crew members should be given Kriss Super-V's and MP-7's, the more the merrier. This is meant in all seriousness, you can't hijack a plane with 30-40 guns at your head.
-Penguin