April 15, 2013 3:24 pm Obama: “We Will Get to the Bottom of This” President Obama vows to bring those behind the Boston Marathon attacks to justice. The blasts left two dead and dozens injured at Boston Marathon finish line. US & World Videos 1:45 NYPD enters Columbia University in riot gear to clear protest 4:28 ‘Apples Never Fall' and ‘Jurassic Park' star Sam Neill reveals his real name 3:21 Katy Perry's surprising regret about cheeseburger Met Gala look 1:01 Biden administration plans to reclassify marijuana as a Schedule III drug 2:28 King Charles returns to public duties amid cancer diagnosis