"Thomas Borchert" wrote in message

2. Government buildings in DC are likely to be preferred targets of
such attacks.

It happened once. Once.

More than once. http://www-tech.mit.edu/V114/N40/crash.40w.html

Remember the Cessna that crashed into the White House lawn in 1994. He
missed the WH.
The guy carrying the nuclear football was in the White House at the time.

-c