Live coverage of the explosion at the Boston Marathon.
Curt Nickisch, Reporter for WBUR 90.9 FM, Boston. (@CurtNickisch)
Jessica Stern, one of the country's foremost experts on terrorism. She has written extensively on terrorism and weapons of mass destruction. Author of, "The Ultimate Terrorists," and "Terror in the Name of God."
Thom Kenney, was running in the Boston Marathon, crossing the finish line just a moment before the first explosion went off.
Lucy Miller, registered nurse volunteering in the medical tent at the race.
Congressman William Keating, (D-MA) Member of the House Homeland Security Committee.
David Cid, Executive Director of the memorial Institute for the Prevention of Terrorism. The institute was formed after the 1995 bombing of the Alfred P Murrah Federal Building. 168 people died in that blast.
WBUR, Boston's NPR news station, offers complete local coverage of the Boston Marathon bombings.
Video of the explosion courtesy of the Boston Globe's Steve Silva:
Video of the aftermath courtesy of the Boston Globe's David Abel:
Please be advised that these images may show injured people at the site of the explosion.
This program aired on April 15, 2013.