 CBS News correspondent Ed O'Keefe has more on the security at the RNC in Milwaukee. Anyone authorized to be on these grounds has to have a series of security badges with them to show that they're here. We've got to have them to get in here and then to get into the building and then to get onto the floor. All of it designed to make sure that this entire event all week long is safe and secure so that the official proceedings of the convention can begin in the coming hours.