A law enforcement supervisor represents the highest ranking officer within a department, as well as the chief executive officer of their local government entity. In this capacity, a police supervisor must exude knowledge and proficiency in supervisory practices, principles, and techniques. Through the use of scenarios and questions, this manual enables one preparing for promotion, a newly promoted supervisor, or a supervising officer to test their knowledge, evaluate their proficiency, and effectively learn from their mistakes. This is accomplished by placing the officer in the assumed role of the on-duty supervisor while on patrol, on desk duty, in the conference room, or at the scene of an emergency situation. Numerous scenarios are presented in three distinct parts: (1) supervision and personnel matters, such as civilian complaints, conferences, discipline, female officers, grievances, psychology, and training; (2) patrol situations and field operations, such as auto accidents, crime prevention, evidence, field interrogations, labor disputes, traffic control, and lost/missing persons; and (3) tactical procedures and emergency situations, such as aircraft accidents, bomb threats, explosives, family disputes, hostage situations, search of premises, vehicle pursuits, and vehicle stops. Within these three parts, officers are asked a multiple-choice question related to a specific scenario, within the specified subject area (i.e. civilian complaints). The correct answers to each question are provided on the page following the question(s). There are a total of 358 scenario-questions.