Actually, most of the ideas have been around for years. The ‘airplane into the building’ idea was first floated by Tom Clancy in his book, “Debt of Honor” and Edward Abby wrote about blowing dams in “The Monkeywrench Gang,” even giving a few pointers. A movie came out years ago about the British effort to blow a well defended Nazi dam during WWII. That also gave hints about how to be most effective.
While most dams have a barrier of some sort to keep boats and/or debris from getting too close to the dam itself, a determined terrorist would have little trouble defeating it.
For the time being I’d suggest that people NOT live downstream from any large dams.
The plane into building idea was floating around in the sixties and was reported to Nixon in 1969 in an investigation into the terror underground. Someone tried to hijack a plane out of Baltimore (I think) in the early seventies with the aim of hitting the WH.
Nuke power plants and large dams are our biggest vulnerabilities. If Lake Powell “surged” to the Gulf of CA I imagine it would take Mead along with it. Maybe we should lower the impounded water levels a bit until Islamofascism is wiped out.
I think it was used in Stevn King's (writing as Richard Bachman) 1982 novel The Running Man. They changed it in the movie, but as I recall, the main character siezed an airplane and crashed it into the TV network's HQ.