Law enforcement negotiation is one of the only times when a law enforcement officer interacts with an offender during the commission of a crime and, as such, can influence the outcome of the situation in favor of law enforcement. All other interactions between offenders take place after the commission of the crime or during undercover operations when the law enforcement officer is hiding his or her identity. Law enforcement crisis negotiation (LECN) provides techniques, tactics, and procedures for seamlessly dealing with difficult, dangerous, and disordered persons to obtain voluntary compliance through the application of verbal influence-based skill sets. LECN is a method by which to deal with perceived threats to a subject’s emotional, psychological, or physical well-being during intense conflict or crisis situations. Understanding critical incidents and the mindset of a subject is critical to determining the proper communication strategies and tactics. At the heart of the process is understanding and assessing instrumental and expressive behavior in order to apply tactical negotiation or crisis intervention. A key skill set to being effective in negotiating with difficult, dangerous, and disordered persons is to build credibility through the application of the Behavioral Influence Stairway Model (BISM) in the effective application of active listening skills, empathy, rapport-trust, and influence to persuade behavioral change on the part of the subject.