The most recent IElectronicD event I remember is the college student in Boston with the LED light on her shirt. She got hauled off to jail and one of the officers involved said something to the effect of "she's lucky she didn't get shot".
There's also the recent Dental Air Compressor confiscation in Houston...
I understand being cautious and concerned when unusual items show up, but if there is an appropriate explanation available, I don't get the "confiscation is our only option" approach.