 Hopefully all of those issues that could arise, i.e., could someone get on top of a building with a rifle, are to be discussed and mitigated before the actual event takes place. Attorney Walter Bowers experiences high-level security as a Charlotte police officer during the Democratic National Convention in 2012. He anticipates more changes now. So the type of security that we're going to see is going to be unprecedented. Security experts at all levels say they hope to never have to fall back on emergency plans.