I know that they still keep talking about airplanes, but this is the sort of attack that is more realistic. A few rogue individuals laidened with explosives walking into lobbies and blowing themselves up in 8 to 9am hour.
Only information really needed to pass along is the date and rough time frame, if you wish to have something semi large. Next to impossible to stop the "lone wolf"....
I don't know if this report is true, but this is the sort of thing that I think is far more plausible than anything else.
Maybe, but very difficult to do at just about all of the major buildings in Manhattan these days.
As for the NY Stock Exchange, you can't even walk close to the place without proper credentials and ID. The Federal Reserve Bank? Their police force is constantly on patrol -- both on foot and in cars (I see them drive down my block every night) -- both on the perimeter of the building and around the neighborhood (which is where I live) with powerful-looking machine guns and deadly serious looks on their faces.
Hard to drive trucks into Manhattan Island. Van or larger vehicles are subject to random searches. If suicide bomb trucks are used, the bombs have to be assembled inside of Manhattan and loaded on to the van/trucks shortly before the attack. That means the terrorists have to be inside Manhattan somewhere right now.
We are fortunate that the Muslim Terrorists are quite stupid - they could have learned that a single sniper team held the metro DC area terrorized for weeks, and sent similar teams to every metropolitan area in the USA.