The problem with ‘security theater’, aside from the gradual increase in the intrusion of government into the private sphere, is that it provides the illusion of security. It allows people to let their guard down in other areas.
There’s an old saying that generals always prepare to fight the last war. And the TSA tries to protect you from the last terrorist attack. In the meantime, there are other, completely unprotected soft targets all over the country that get no attention. And other ways to cause havoc at an airport that doesn’t involve setting a bomb off on a plane.
What happens when some terrorist rents a Cessna Skywagon and flies it into a jet sitting on a taxiway waiting to take off? Such an event would likely kill most of the people on both planes. Are we then going to ban private aviation from major airports?
What if that terrorist fills the Skywagon with napalm and nail bombs, and crashes it into the middle of a crowd at an open-air concert or a football game and kills 10,000 people? Are we going to ban small aircraft from any area where there’s a crowd?
What if a terrorist derails an Amtrack train with a rail bomb? Are you going to put inspectors all along the track forever?
What if a terrorist drives a semi filled with ammonium nitrate explosive into a major tunnel and detonates it? Are you going to stop all truck traffic and search it before allowing it into tunnels or onto bridges?
What if a terrorist uses the same kind of bomb in a truck to vaporize a few thousand gallons of chlorine at a waste treatment plant?
What if terrorists start doing John Allen Muhammed style sniper attacks in large numbers? That guy and a teenager terrorized a wide area for days. Imagine that being repeated randomly all across the country, with new incidents cropping up every few weeks. How are you going to stop that?
The list goes on, and on, and on. The west is made up of free, open societies just filled with soft targets. Refineries, chemical storage facilities, factories that use hazardous materials, train shipments of deadly chemicals, you name it. You can’t protect it all. You can’t even protect a decent percentage of it.
What you CAN do, which would actually enhance safety, would be to send a message to terrorists that they can’t break your spirit, that anything they do to you will not change your policies or your lifestyle. By reacting to each attack with a new round of restrictions, you validate their strategy and give them incentive to keep at it.
The best anti-terrorism policy the U.S. could have had would have been to engage in an accelerated program to rebuild the World Trade Center site, only taller and more impressive. Maybe with a giant American flag on the top. Instead, ten years later there’s still a big hole in the ground. That in itself sends a message of weakness and fear. All the security in the world isn’t going to protect you if the terrorists think they’re winning the long war.