...please contact email@example.com immediately.
The FBI has set-up 1-800-CALL-FBI (1-800-225-5324), prompt #3, for anyone who has information, visual images, and/or details regarding the explosions along the Boston Marathon route and elsewhere. No piece of information or detail is too small.
Any images, however trivial at first glance, could help the investigation. This includes footage of the area in the day or so before the race.
That goofy pic you took of your cousin could have an important clue hiding in the background.
And to Boston:
When the rest of this country was still a wilderness, the people of Boston stood up to one of the greatest empires the world had ever known.
You got this, Boston. And the rest of us have your back.