NEW: Hundreds of high school students line the hallways of an Alabama hospital to say goodbye to their classmate as she heads into surgery to become an organ donor. 18-year-old Kimber Mills was shot at a party over the weekend. Mills was shot in the leg and head, allegedly by 27-year-old Steven Tyler Whitehead, after a fight broke out. Mills did not know Whitehead, who has since been charged with m*rder and three counts of attempted m*rder. The high school cheerleader was taken off life support