Excerpt:
With the FBI on alert for home-grown terrorists, the agency is monitoring troubling cases of vandalism in Northwest D.C. that seem to express support for so-called Islamic State militants.
Graffiti on a traffic camera at the busy intersection of Connecticut Avenue NW and Calvert Street NW reads, in Arabic, "Allah Akbar" followed by "ISIS," referring to the terror group.
"It's strange," said tourist Lacey Rase. "I don't know why anyone would do that."