The culture of the fire service is near impossible to convey. Gregg's 20+ years of experience affords him the opportunity to try and explain...and he pulls it off! Brian Cunningham, Battalion Chief, Chicago Fire Department Being a first responder is unique and dealing with mental health brings its own set of challenges. Gregg uses his experience as a firefighter and a mental health professional to provide valuable insight to the masses. Jacob Dickman, Paramedic Field Chief, Chicago Fire Department.