States. deshawn perry was one of three university of virginia football players, gunned down four weeks ago. all had been on that bus, as they arrived back on campus. >> for me, it's just -- >> reporter: his mother speaking publicly for the first time with nbc news. >> i'm broken. >> reporter: she had been on the phone just moments before the shooting. >> his cell phone had gone dead. >> reporter: twitter than lit up. active shooter at uva. what was that waiting period like? >> dreadful. >> reporter: hours of waiting and then at 2:30 a.m., campus police rang their home. >> everything just stopp...