 The Secret Service says it's beefed up already tight security at the convention. Coordinator Audrey Gibson-Siccino. We have accounted for various security scenarios that may arise, and we are confident in the plan we have implemented. No mystery about who will be formally nominated, but Trump's expected to end speculation and name his choice of running mate today. CBS News special report. I'm Vicki Barker. Sports at 25 and 55. Powered by Maximus. Moving people and technology forward.