Greg Hennessey began his fire service career as a volunteer firefighter in Freeport, New York. After relocating to Southern California, he entered the profession full time, joining the ranks of the Orange County Fire Department in 1990. Outside of the fire house, Greg was known as a loving father and husband, an avid Ford Mustang fan and collector, a theater tech volunteer and an active mentor within the Boy Scouts of America. He is survived by his wife Deanna and their two sons, Ryan and Brandon. Greg died in 2014 after suffering a job-related heart attack.