Originally Posted by
oneofthosepeopleyouloveto hate
Keep in mind there are limitations, technologically and privacy-wise, to what we can do in screening PAX (i.e., we're not doing cavity searches)!
In the absence of such, a system that red-flags suspect persons and assigns them additional security (SSSS) or, perhaps, doesn't allow them to fly at all, may have some validity.
It has about as much validity as a hole in Swiss cheese has cheese.
The problem with the "logic" in what you mentioned above is that the additional search has no benefit other than a marginally higher chance of locating explosives on the stupidest of terrorists -- in other words it won't do anything against a 9/11-type operation since they'd already know in advance of (they and their persons) getting screened at the checkpoint who will be and will not be flagged for the additional screening.
I suggest the idiots in DHS/DHS-TSA management seek out to re-discover what KSM knew about CAPPS-type selection and then think why it means ID checks should be scrapped as a faux security measure.