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William Evans

Lead Boston Marathon bombings investigator talks urban security

William Evans explains how training, public-private partnerships, helped mitigate damage, ID suspects

BOSTON—When the two bombs exploded at the Boston Marathon finish line in April, there was chaos. Hundreds were seriously injured. Participants and spectators were panicked, not knowing where to turn for safety. Were there more explosive devices set to go off in a few seconds?
Within 22 minutes, chaos was quelled, and the area was secured. How?