There is only so much negotiating and maneuvering that can be done while the aircraft is under siege in mid-air. Therefore, the best way to put a stop to hijacking is by having high levels of security implemented by qualified and trained personnel both on the ground and in the air.
After Lockerbie, everyone thought, now we've learned the lesson of how to be proactive instead of being reactive. Unfortunately, September 11 came and we know the result. Thousands of people lost their lives. Security totally failed, not at one airport, at three different airports around the country.
Realize that a Muslim will know that his wife was seen naked in this machine. You know what would be the reaction?... Terrible. I believe there's technology out there that can identify bomb-type materials without necessarily, overly invading our privacy.
We need to put undercover security armed people at the curbside of the terminal with the uniform of policemen. We need to protect the terminal. We need to protect the security checkpoint, the gate, the aircraft, the perimeter.
They can argue whatever they want. The problem is, when you interview every passenger, during the interviews you are looking for - you profile - you do profiling, to find the suspicious ones and put them out from the rest of the passengers.