But, thanks to constant multi-agency communication up to state and federal level, officials are more than ready. Officials expect attendees to start lining up to get into the stadium as it is a first-come, first-served system. Security details shared on the memorial website note that funeral attendees will not be able to bring bags into the venue and that "enhanced security measures are in place." The city police department will be overseeing external security as the Secret Service manages inside the stadium. It's all hands on deck - but there are multiple decks," Jonathan Wackrow, a former US Secret Service agent told CNN.