Boston Marathon security: How can you keep 26.2 miles safe?

CNN, which can't seem to get anything right these days, ruined another bit of coverage today when what appeared to be a moment of silence during Boston's marathon bombing memorial tribute today was interrupted by what 

The families of Martin Richard, Lu Lingzi and Krystle Campbell with Boston Cardinal Sean O'Malley during a wreath laying ceremony on the one year anniversary of the 2013 Boston Marathon Bombings. (Photo by Andrew Burton/Getty Images) 

Following today's one-year anniversary memorial events for the victims of last year's Boston Marathon bombing, police evacuated the area surrounding the marathon finish line Tuesday evening after a barefoot man wearing a 

Following today's one-year anniversary memorial events for the victims of last year's Boston Marathon bombing, police evacuated the area surrounding the marathon finish line Tuesday evening after a barefoot man wearing a 

A barefoot art student named Kayvon Edson was taken into custody last night after he apparently left two backpacks at the site of last year's Boston Marathon bombings. The backpacks, later detonated by law enforcement officials, were filled will rice