Two Years After The Bombings At The Boston Marathon, Security Remained Tight At The Race. The 2015 M

Two years after the bombings at the Boston Marathon, security remained tight at the race. The 2015 m

Two years after the bombings at the Boston Marathon, security remained tight at the race. The 2015 m

Enhanced security to remain in place for marathon

WCVB Channel 5 Boston

#OneBostonDay -- 10 years after the #BostonMarathon bombing, a solemn memorial on #BoylstonStreet

WCVB Channel 5 Boston

Boston Marathon Explosions Video: Two Bombs Near Finish Line

London Marathon security beefed up after Boston attack

Thousands gather at finish line 10 years after Boston marathon bomb attack

Watch: Moment of silence marks 2 anniversary of Boston Marathon bombings

Extra Security in Place for Boston Marathon

CBN - The Christian Broadcasting Network

London Marathon beefs up security after Boston bombings

AFP News Agency

Security tight at Boston Marathon

London Police Review Marathon Security After Boston Attack

Voice of America

Tributes to Boston, extra security at London race; Bethlehem holds first marathon

10th anniversary of Boston Marathon bombings, security plan in place

Heavy security at London marathon, poignant day for runner who also raced in Boston

Boston Marathon Bombing, 10th Anniversary

WNYT NewsChannel 13

Boston Marathon bombings, one year later: What have we learned?

Boston marks second anniversary of marathon bombings

CBS Evening News

Security increased for London Marathon

CNN

London Marathon observes silence for Boston bomb victims