VIDEO: It was a misdiagnosis that nearly cost a Valley firefighter his life.
Glendale firefighter Dennis Dorrance was struggling to breathe, but he said a routine physical exam at work is what saved him. Dorrance was treated at Biltmore Cardiology, diagnosed with a condition he didn't even know he had. Now, Dorrance hopes his story is a lesson to other firefighters, as well as others who have physically demanding jobs.
Dorrance works long hours at the fire department, putting his body through the hottest of temperatures, carrying hundreds of pounds of gear and climbing numerous flights of stairs.