Not all heart attack cases are the same, but we need to understand why firefighters are more likely to have a heart attack related to their daily activities at work than a person normal. In the article “Emergency Duties and Deaths from Heart Disease Among Firefighters in the United States,” Stefanos N. Kales writes: “A heart attack occurs when the blood supply to a segment of the heart muscle is extremely diminished or interrupted. This happens when one of the corridors that supply blood to the heart muscle becomes blocked by a blockage. This blockage may be due to a condition called atherosclerosis (a development of fatty substance along the course mass), blood clotting, or a coronary vessel in contact with overall control. In the event that the blood supply to a part of the heart stops, that part of the heart will no longer receive the oxygen or supplements needed to replenish its capacity and will disappear. If it’s a small part of the heart included, it will have the ability to function without it.” “A study shows that heart attacks are responsible for 45% of firefighter deaths” (Kales). For firefighters, inhalation of smoke and other dangerous hydrocarbons often leads to this “greasy” blockage of the heart vessels. The lack of sleep that firefighters also encounter on a