[Wonder Warthog]

"Taking out a ferry or bridge is way too difficult."

Well, taking out a bridge "is" way too difficult--but taking out a ferry is as simple as driving a van or several car-trunks full of explosives on board and setting them off. I'm sure it is possible to disguise sufficient explosive material so as to not be detectable in a cursory search.

[elfman2]

"but taking out a ferry is as simple as driving a van or several car-trunks full of explosives on board and setting them off."

Perhaps, It depends on a lot of things.

[TheErnFormerlyKnownAsBig]

Hey, if you light 5 or 6 fires at different vital spots at once. Pandemonium breaks out and the ferry is on fire so much it can't pull in to the pier. Up here in Edmonds There aint no fire tug like in Seattle, as if when the ferry tug arrived 45 mins. later it would matter.

[Inkie]

"Taking out a ferry or bridge is way too difficult."

Seems to me that, a year ago, some might have said that taking out the World Trade Center would be way too difficult.