Gregory J Hennessey

Fire Engineer Hennessey was found by his colleagues in cardiac arrest at Orange County Fire Authority Fire Station 45 in Rancho Santa Margarita. Other on-duty firefighters immediately began lifesaving treatment and he was transported to a local hospital. Despite all efforts, Fire Engineer Hennessey was pronounced dead approximately 40 minutes later due to a heart attack.

Department Information

Orange County Fire Authority
OCFA Fire Station No. 45
30131 Aventura
Rancho Santa Margarita, California 92688

Chief: Jeff Bowman

Gregory J Hennessey was included in the USFA’s annual report Firefighter Fatalities in the United States.
Age: 49 
Rank: Fire Engineer 
Classification: Career 
Incident Date: Jan 20, 2014 09:40
Date of Death: Jan 20, 2014 
Cause of Death: Stress/Overexertion 
Nature of Death: Heart Attack 
Activity Type: Not On Scene 
Emergency Duty: No
Duty Type: Other On-Duty 
Fixed Property Use: Store/Office