President Barack Obama was briefed on the latest developments on the situation in Boston on Friday, amid a massive manhunt for Dzhokhar Tsarnaev, the second suspect in Monday's marathon bombings.
From the White House Flickr page:
President Barack Obama meets with members of his national security team to discuss developments in the Boston bombings investigation, in the Situation Room of the White House, April 19, 2013. Pictured, from left, are: FBI Director Robert Mueller; Lisa Monaco, Assistant to the President for Homeland Security and Counterterrorism; Attorney General Eric Holder; Deputy National Security Advisor Tony Blinken; and Vice President Joe Biden. (Official White House Photo by Pete Souza)