Daniel O'Neil, 22, a graduate student in engineering from Lincoln, Rhode Island, played guitar and wrote songs, which he posted on a Web site, www.residenthippy.com. Friend Steve Craveiro described him to the AP as smart, responsible and a hard worker . pretty much destined to be extremely successful. He would come home from school over the summer and talk about projects, about building bridges and stuff like that, Craveiro said. O'Neil graduated from Lafayette College in Easton, Pennsylvania, before attending Virginia Tech as a graduate student and teaching assistant, Craveiro said.