It's an idea that is good in theory, but in the hands of TSA - well, that's another story.

The dogs will be trained to detect explosives. Fine. How many times have you had your footwear - or feet - swabbed? Will the dogs be able to detect (and not respond to) the types of fertilizer that alarm? Any traces on someone's shoes can get on the floor and be tracked around and picked up by other people.

The problem with the questioning will likely be TSA's implementation. The starting assumptions will be that training can be quick and easy and that all pax are probably guilty of something.

The goal, as it is today, will not be to clear innocent pax, it will be to detect the 'big catch'.