more questions...wouldn't you think in an era of terrorism, mass shootings, etc. there would be cameras all over the venue area, pointed everywhere? Wouldn't there be men/women with binoculars stationed here and there? Are there ways of shortening response time? Are there ways to tell people to flee the site without causing stampedes? Are there ways to tell people in a hotel to either flee or shelter in place, depending on their location? What preparations do we know of in terms of hotel and venue and what were the reactions?