Interesting synopsis -- Just a couple of points (I'm not picking on you -- just asking):

1. You left out the most completely useless form of secondary screening: the "continuous screening" farce in which passengers who haven't beeped are sent to secondary screening using "We have to conduct continuous screening" an a lame excuse.

2. How do you define a "potential threat to commercial aviation?" -- Known & verified terrorist? Someone with a joint in their purse? Someone with an Arabic name? Someone with unpaid parking tickets? A deadbeat dad? Someone openly criticizing the Administration? Someone who opposes the Patriot Act? Somebody who bought a one-way ticket? David Nelson?