Boston Police Commissioner Edward Davis testifies before the House Homeland Security Committee at a hearing on "The Boston Bombings: A First Look," on Capitol Hill in Washington, Thursd

 

              Boston Police Commissioner Edward Davis testifies before the House Homeland Security Committee at a hearing on "The Boston Bombings: A First Look," on Capitol Hill in Washington, Thursd
Boston Police Commissioner Edward Davis testifies before the House Homeland Security Committee at a hearing on "The Boston Bombings: A First Look," on Capitol Hill in Washington, Thursday, May 9, 2013. (AP Photo/Susan Walsh)