Depends on a lot, I would imagine the sweep was made earlier and the area declared clear. Whether or not dogs were present at security is any ones guess.
Warning: language NSFW and bits of graphic images Video of the first explosion by STEVE SILVA, Bosto...
New York Post reporting about the suspect in the hospital, CBS apparently reporting the surveillance videos.
NY Post: "Authorities have a identified a suspect, who is currently being guarded in a Boston hospital with shrapnel wounds."
a Saudi national Authorities ID a suspect in marathon bombings - he is being guarded in Boston hospital - NYPOST.com hope they didn't pick the first guy who looked like a terrorist.
Chances are the have already looked at the video and I would suspect they have him on there doing something.
Video of the first explosion by STEVE SILVA, Bosto... Disturbing, but not so graphic video from a photog at the finish line. Proud of the first responders.