Working in an environment with high exposure to traumatic events, witnessing serious injury or death, experiencing long-lasting or frequent trauma.

These are common working conditions for first responders, and are some of the main causes of post-traumatic stress disorder.

Clinical psychologist Dr. Megan McElheran and Executive Director of Wounded Warriors Scott Maxwell says the need for public understanding, awareness and more resources for emergency and military personnel suffering from PTSD is key in destigmatizing mental heath issues..