Background: First responders (FRs) are at high risk of being exposed to traumatic events in their occupational roles. Responding to critical incidents often involves exposure to life-threatening circumstances, dealing with fatalities and encountering highly stressful situations that may trigger traumatic responses. These experiences can lead to poor physical and mental health (MH) outcomes including post-traumatic stress disorder, co-morbid conditions such as depression, anxiety, substance abuse, insomnia, and suicidality.