you know one thing we haven t really talked about is what it s going to be like for these kids to go back to school. so many of their classmates are gone. so what s the school going to look like when they finally do go back to class? it s going to be nearly impossible for them to recuperate. definitely. what a story. tens of thousands of runners set for today s 118th boston marathon. the victims of last year s attack were honored last night at fenway park before the red sox game. the tribute includes large banners, one from every state, stretched out across the outfield. earlier runners were offered a policing ahead of that 26.2 mile effort. the marathon is held on patriots day, a state holiday in massachusetts. officials want it to be a festive occasion but make no mistake, law enforcement will be working overtime today to make sure nothing like last year takes place. abc s brian ross investigates in boston. reporter: the city seems in a festive mood with a record number of