time to talk to us. >> thank you. david mcnell, i apologize if i'm getting this name incorrectly. he is on lockdown inside harvard. david, tell us where you are and what's going on. >> i'm currently in elliott house, one of the 12 houses on harvard's campus. this morning around 9:00 a.m. we received e-mails from harvard's system of a reported explosive and then about 15 minutes later we received another alert that cambridge police were on the scene and we were advised not to leave our houses. and then recently, maybe in the past 15 minutes, half hour, they have cancelled all the exams and many students have returned to our house. some happy, some shaken, but it's just a weird feeling during exam week. >> were some of those students who returned to your house, had