When assessing an account, be sure to ask questions regarding company policy on firearms, threat response, and also check the laws for state and local carry rules. Then verify reality matches the picture described in the interview. All it takes is one jumpy, perfectly legal, gun carrying employee to accidentally put a hole in your plans. If there are security guards and/or they are armed, make sure they are experienced, follow their procedures, and practice drills. Even a billy-club can ruin your day. If there is a fair chance that you may be looking at an unexperienced, unprepared armed response, discuss the risk with the client and consider delaying any physical check that may result in conflict until the client’s people are better prepared.