CBS LAS VEGAS- Three people are dead and dozens injured after two bombs went off near the Boston Marathon finish line Monday afternoon. It happened around 2:50 p.m. outside Marathon Sports on Boylston Street as thousands of runners were finishing the race. Dan Bongino, Former NYPD and Secret Service Agent, talks about the tragic event that took place in Boston and what security is like at these type of events.
People sign a poster as people gather in the Boston Commons for a vigil on April 16, 2013 in Boston, in the aftermath of two explosions that struck near the finish line of the Boston Marathon on April 15. Investigators said the range of suspects and motives in the grisly Boston bombings remained "wide open" as experts assessed remnants of the crude devices designed to inflict maximum suffering. AFP PHOTO/Don Emmert (Photo credit should read DON EMMERT/AFP/Getty Images)Photo Credit: DON EMMERT/AFP/Getty Images