FBI agent recounts “ah-ha” moment when analysts spotted the bombers. — -- [This is the second of five installments of an ABC News digital special report '5 Days', which tells the hour-by-hour, ...

FBI struggles to learn identity of the bombers, confusion over arrest abounds. — -- [This is the third of five installments of an ABC News digital special report '5 Days', which tells the hour-by ...

Within hours of the Boston Marathon bombing Monday, the Navy dispatched a three-member team from Newport, R.I., to try to help to track down the perpetrators. As word spread of multiple amputations ...

BOSTON (KABC) -- One year after explosions ripped through Boston during the city's marathon, thousands pour in to pay their respects for the anniversary. The first tribute of Tuesday began with a ...

BOSTON (KABC) -- Survivors, first responders and relatives of those killed poured into the streets of Boston Tuesday one year after explosions ripped through the city's marathon. The anniversary was ...