[kristinn]

Direct link from White House Flickr page and description:

P041913PS-0314 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)

[Joe 6-pack]

"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."

I guess the director of homeland security couldn't be troubled to attend a national security meeting.