Police and Public Safety Psychology requires, at a minimum, distinctive knowledge of the following: the essential functions of police and public safety personnel and organizations, working conditions unique to their respective positions, common and novel stressors inherent in public safety work, normal and abnormal adaptation to occupational stress and trauma, research pertinent to resilience and recovery in public safety personnel, and the unique aspects of confidentiality and testimonial privilege when providing services to public safety personnel and/or agencies.