POSTED: 08:59 AM PDT Mar 31, 2013 UPDATED: 08:59 AM PDT Mar 31, 2013
- Determined runners take back Boston Marathon
- Official: Marathon will be 'safest place on the planet'
- 2013 Boston Marathon runners ready to race
- Boston goes silent on bombings anniversary
- 'We are America, we own the finish line,' Biden says
- Biden: Boston has become 'face of America's resolve'
- On camera: Explosion at Boston Marathon finish line
- On camera: 2nd Boston Marathon explosion heard