You are NEVER guaranteed to arrive alive anywhere you go. YOu can get the colonoscopy and the plane could still go down. A terrorist could be very skilled in hand to hand combat and take out the pilot. can't screen for that.

The plane could malfunction and go down.

You could drive your car and get in an accident.

The train could go off the tracks.... etc etc etc

you are NEVER guaranteed another day. Why give up your freedoms and your constitutional rights for that slim chance that something bad could happen especially considering this new system is quite easy to find a way to get around it.

We are so crippled by our fear that we are willing to give up anything for the illusion of safety

but rest assured you are NEVER going to be guaranteed that you will arrive alive.

if I'm afraid to fly... I simply won't fly (nice that I have the option not to fly). I won't make everyone else give up their rights for MY fear.