>> 35 miles an hour. >> yes, sir. >> so somebody's going to get run over? >> somebody is going to get run over. >> reporter: the bulls will be released on closed courses with the first run set for virginia at the end of the month. unlike the streets in spain, here there will be cutouts where slow runners can escape. some disapprove. this seems barbaric and senseless to me. others can't wait. i want to experience as much as i can before i can't. the humane society is opposed to the event. the usda tells nbc news it's carefully examining this issue. as a vet, will there be any harm to the bulls? >> should not be any harm at all. >> what do you make of this idea of running with the bulls? >> it's not something i would want to do. i would like to be on the other side of the fence looking. i don't like to be chased by anything. >> smart guy. he knows. >> yeah. >> that's nbc's kerry sanders. why hasn't this been done before? >> because it's stupid! because you go there and you run -- bulls run after you and