Comment Re:I doubt it (Score 2) 228
Yup, it's always been there.
Plenty of people know where all the international fiber endpoints are. I can think of a dozen buildings that if they were isolated, it would cripple Internet service in the US. They don't even have to shut down entire datacenters, only the power in the meet-me rooms. I think DHS can find 2 dozen agents in the US who would go to those buildings, shut down the rooms, and the Internet is gone.
As we've seen before, a problem with just one tier 1 provider can make Internet service crawl. Dropping a few major peering points would effectively shut the whole thing down. It's not even hard to find them, if you've been doing business with them. I've been to a few.
They could probably have it ready to shut down simultaneously with a 30 minute lead time to give enough time for the agents to drive to them. Internet and phones would be dead everywhere in the US, and severely interrupt international use. Any remaining links and private peerings would be saturated beyond use.
There are maps and lists readily available.
http://www.submarinecablemap.com/
http://en.wikipedia.org/wiki/List_of_Internet_exchange_points#North_America
http://www.bgp4.as/internet-exchanges
http://www.datacentermap.com/ixps.html