>>>>not that I recall. No targets in DC other than the pentagon were involved.
http://www.rediff.com/us/2001/sep/11ny.htm "Some eyewitness reported that a US military helicopter was seen in the no-flying zone around the Capitol before the explosion. A fire also broke out on the Washington Mall."
There was a fire at the Washington Mall. But I honestly don't know what caused it. Might or might not have been terror related.
There was also an explosion in Foggy Bottom.