I put the "mad" icon because my former company didn't have security or any rules in place about unstable people.  No one explained me how to prepare in case of an emergency like this, even when I asked!!!  No one seemed to know what to do!  People had to sign in but didn't have to show any ID.  There were no security cards, anyone could walk through the front door AND EVEN THE SIDE DOORS-no one would even know they came in!  They really did not react quickly when I called that a person with no known agenda was in the lobby, which COULD be a recipe for disaster if it's the wrong person...I really hope they get their act together!!!