is where a lone gunman launched an assault on two military facilities. four marines were killed and three wounded. the shooter was shot and killed by local police. the gunman is identified as 24-year-old mohammad youssuf abdulazeez. law enforcement officials tell cnn he was born in kuwait and had jordanian citizenship but was a naturalized u.s. citizen. friends say he visited the middle east several years ago, but officials say his name has never appeared on any terror watch list and found nothing to tie him to an a international terrorist organization. we have heard from a lot of people who knew the gunman including a former classmate who told our am ra walker that she would have never expected him to do something like that. >> he always, always had a smile on his face. he just -- he never seemed like the type of kid who would do something this heinous. >> it is incredible. popular, witty, all-american kid