CHICAGO --A man on his way to the opera had a heart attack. Now he says he has two Chicago police officers to thank for saving his life. On February 16, a woman saw Hector Sabelli collapse on the sidewalk in the 300-block of West Washington. She called police and when officers Mathew Dorn and Artemio Pena got to him, they performed CPR on Sabelli until the paramedics arrived. Sabelli was taken to the hospital and is better now. On Tuesday, he thanked the officers in person. "I know that if it weren't for your skill, your ability to perform under pressure, I would not be here today. This is that simple," Sabelli told Pena. The officers say the firefighters on the scene deserved just as much thanks.