Just heard on the news (in Baltimore) that there was an accident involving a Metrobus by NIH. According to the video footage the bus involved was 6206 and the reporter mentioned the bus as mangled and involved "a lengthly extracation process".
I just saw that too. 5 vehicles were involved in this accident.
http://www.nbcwashington.com/news/local/10-Injured-in-Rockville-Pike-Crash-136334628.html (http://www.nbcwashington.com/news/local/10-Injured-in-Rockville-Pike-Crash-136334628.html)
1 dead, 10 injured.