Across Nation, Universities Reconsider Their Own Security Plans

Within hours, authorities bolster police patrols on some campuses

University officials in Iowa, meanwhile, said they were still determining how to react to the tragedy. "It's a little too premature to comment at this time ... and we do not have all the facts. But it's definitely a horrific, horrific tragedy," Iowa State University spokeswoman Annette Hacker said.

Contributing: Patrick O'Driscoll, Martin Kasindorf, John Ritter, Dennis Cauchon, Lindsay Nash of the Asheville Citizen-Times; Maureen Milford of The News Journal in Wilmington, Del.; and Perry Beeman of The Des Moines Register.