Well, this is news to me...
A few minutes ago, I was browsing Metrobus' page on Wikipedia, and under the "Fleet" section, it said that 2544 was out of service due to an accident on I-395. I have searched the websites of FOX, ABC, and NBC for any information about this accident, and I have come up empty-handed. And I doubt this is just graffiti; I checked 2544's location on NextBus, and it is at Four Mile Run with a timeout of 1.8 million seconds.
Does anybody have any leads on this? I'm a bit confused...
hmm, the page was last updated on March 22, not sure how to find out when that part was added, but maybe they confused 2544 with 2724? I guess we can only find out some other way.