This retired firefighter saved a man's life doing CPR. But for his effort, the moment the cops arrived, they rewarded him with a massive federal lawsuit. >> Stay over here. Stay over here. Stay over here. >> Huh? >> I got a crime, sir. I'm a detective. >> YEAH. AND I'M HERE HELPING HIM. SO STEP THE OFF. >> OKAY. IF YOU'RE A GOOD DETECTIVE, YOU WOULDN'T BE OUT ME RIGHT NOW. YOU'D BE TAKING CARE OF YOUR JOB. >> GET OUT OF MY CRIME SCENE. >> WHAT ARE YOU GOING TO DO TO ME? >> GET OUT OF MY CRIME SCENE. I'M GOING TO MAKE YOU NEXT TIME. GET OUT OF MY CRIME SCENE. >> COME WITH ME, MR. CRIME. No wonder people don't give you guys the benefit of the doubt. And I work with you mother FOR 27 YEARS. >> THANK YOU FOR TEACHING ME NOT TO BE HELPFUL. YOU FAT PIECE OF >> You have to step back. Step back. >> So now you're going to come over with me, huh? YOU'RE DOING A REALLY GOOD JOB RIGHT NOW, AREN'T YOU? >> I NEED YOU TO BACK UP. >> YOU NEED TO CALM HIM. I NEED YOU TO BACK UP. >> COME HERE. >> I GOT I GOT I GOT HIM. Come here. >> Get your hands off him. >> Take him. Turn around. >> Hey, check that out. I stopped to HELP SOMEBODY BEEN SHOT. I'M GETTING ARRESTED.