No, what this points out is not that Napolitano is incompetent, but that our elaborate system of security theater is probably next to useless. I cannot imagine where this is going to end. No, actually, I can imagine all too well: with passengers checking all luggage and flying in specially issued hospital gowns. And when some enterprising terrorist manages to sneak through that cordon by swallowing his explosives, the TSA will tell us that "the system works" and start the cavity searches.
--Megan McArdle, Atlantic Monthly, on security theater creep