Um, it sounds good in theory but the guy I know working there (manager position) said nothing worked. It was full chaos. And actually some people did not want to go because they did not know what all was about. And they don´t even knew on what floor the shooting was. Could be of interest to know that when announcing in the loudspeakers. And maybe also in English and maybe Chinese. But they only talked Thai and only said that the customers must leave the building. Not why. I understand that they dont want to have panic too of course.