I used to live with a commie in college for about a year. We were 19 at the time and he was fun to hang around with. He was/probably still is a heavy drinker, smoked dope...a real party animal. He also fancied himself a writer. He used to tell me about one story idea he had for a terrorist take over of New Orleans. It would be so easy he said...just block or blow up the bridges and hold the city hostage. For those who don't know N.O. is only accessible by 7 bridges (2 across the Mississippi, 2 across the Bonnet Carre Spillway, 2 across the Rigolets, and 1 across Lake Ponchartrain). A few flipped 18 wheelers or boats crashed into pilings could completely blockade the city...I always think of that when I hear of problems with major bridges.
