Critical incident stress management, initially recognized in the military, aims to assist:

Critical incident stress management (CISM) is designed to support individuals who are exposed to traumatic events, particularly in high-stress occupations such as emergency services. The approach originated within the military to help service members cope with the psychological impact of combat and other traumatic experiences. However, its application has since broadened to encompass a wide range of first responders, including firefighters, medical personnel, and rescue volunteers.

The reason "all first responders" is the correct answer lies in the understanding of CISM as a comprehensive support system. This support addresses the mental health needs of various professionals who might encounter traumatic situations, ensuring that they receive appropriate assistance when dealing with stress, anxiety, or other psychological effects of their work. By including all first responders, CISM effectively acknowledges the shared experiences and challenges faced by diverse roles in emergency response scenarios. This holistic approach assists all individuals in managing critical incidents, promoting overall mental health and resilience within the community of first responders.