Chronology of a guerrilla campaign
The Boston Globe
State Police ask for bomb squad assistance to locate devices under the Longfellow and BU bridges (Photo: A runner exercises along the Charles River across from the Longfellow Bridge).
1:11 p.m.
State Police ask for bomb squad assistance to locate devices under the Longfellow and BU bridges (Photo: A runner exercises along the Charles River across from the Longfellow Bridge).
(Getty Images Photo / Jodi Hilton)