A bit of hyperbole in the headline. It's not a bomb and besides, the problem will be the interest rather than the debt per se.
I'm not sure how to use this but thank the New York Times for putting together this interactive map of the counties most dependent on Federal transfer payments,
What I'd really like to see is a list of the counties with the highest levels of Social Security Disability fraud, this is a program ripe for reform.
As Robert Samuelson wrote for the Washington post (via the Billings Gazette):