You have just finished The Active Shooter online training course. You review the references and make a note to start preparations in the near future. You overhear a conversation a disgruntled employee is having with a fellow co-worker. They sound very negative and borderline threatening at times. You do not really think anything of it until you hear one man mention taking "drastic measures" to stick it to the Command. You consider your next move. Should you tell your supervisor about this conversation?