BANGOR  — A Maine fire department captain from Bangor says he’s grateful to be alive after suffering a heart attack while on the way to an emergency call.

Capt. John Prentiss was with four colleagues in a fire truck on Sunday when he passed out and turned blue.

Firefighter Nate Snyder says he and the other firefighters had seen the look before: He says Prentiss was dead.

The firefighters with Prentiss performed cardiopulmonary resuscitation and used a defibrillator to restart his heart.

Prentiss was taken to the Eastern Maine Medical Center where doctors inserted a stent into a coronary artery. He was released from the hospital two days later.

Prentiss tells the Bangor Daily News he wouldn’t have survived without the four firefighters he calls his guardian angels.