There are arguments for and against CISD/CISM. One thing that is for sure, there has never been proven harm from letting your crew know you're there to help and performing a "defusal" after the incident.

A group of trained peers that meet with their co workers to start the Critical Incident Stress Management (CISM) process after a critical or traumatic incident has occurred. A CISM team doesn't have to be made up of mental health

Critical Incident Stress Debriefing (CISD) was introduced in 1983, but the name was changed to Critical Incident Stress Management (CISM) to more accurately reflect the entire spectrum of services and treatment modalities for a first responder after a critical/traumatic incident.

Critical Incident Stress Debriefing is a tactic used to provide a "psychological or emotional first aid" to first responders. It's not intended to diagnose or cure anything, but simply to recognize the need for further intervention and potentially reduce or

A debrief or defusal should take place ASAP after the incident. This should happen by members of the crew, not necessarily mental health experts. CISD/CISM happens within 72 hours of the incident.