 WBT AM Charlotte. WBT FM Chester. WLNK HD2 Charlotte. News Talk 1110 and 99.3 WBT. New information this morning on Saturday's assassination attempt. Good morning, I'm Mark Garrison. It turns out there were a couple of cops inside the building while the gunman was on the roof, but they didn't know he was up there. Secret Service Chief Kimberly Cheadle now admits the shooting should not have happened.