It really is all just security theater... keeping the peanut gallery scared, entertained... and at the same time self-satisfied about their unearned 'exceptionalism'...

BTW, has it occurred to anyone that someone intending a terrorist act could just blow up a carry-on before ever getting to the ridiculous scanner...

It'll shut down the airport for sure... and do it at a couple of airports simultaneously and you'll shut down the whole network for a day or two...

Stop letting government treat us like childish idiots... yes... things could happen... reasonable precautions should be taken. But this isn't a smart approach.