martin luther king, jr. s famous light in the darkness speech as a tribute to the victims. hi, bryan. reporter: eric this, is the path where the terror suspect drove down south, entering on the bike path. some precautions put in, the white concrete barriers are the small ones. they have added 20-foot large concrete barriers throughout the bike path, to make sure cars and other vehicles can not drive on the bike path, potentially hurting pedestrians as well as bicyclists. as the nypd is working to the make the new york city marathon the tightest event that the marathon ever seen. they have double and triple the personnel as well as double the observation teams, double the sniper teams. they have added much more of those sand trucks, and quote, these quote-unquote blocker vehicles meant to protect pedestrians in the event from potential vehicular attacks. back here though we re now seeing that we have the memorial you re talking about, eric.