scott zichltegler started weari camera on his helmet to show friend and family what his job is really like. the result was this extraordinary glimpse inside the world of a fire fighter. >> everybody knows what firefighters do. but no one ever really gets to see what we do other than maybe, news clip here and there. no one ever really gets to see the inside. >> in 2012, a clip he posted got more than 1 million hits. it also provoked criticism from other firefighters around america who take issue with the fact that here in highland park they have hey highly unusual and highly risky policy of putting their lives on the line to extinguish fires in vacant buildings. buildings most other departments would simply let burn to the ground. the men here point out that many abandoned homes in highland park are used by squatters including sometimes entire families. >> anybody claims they know a house is vacant or not is an idiot. you can't tell me if some one is in there or not until you go in there. who ever set the fire can still be in there. and still it is our job. we took the oath. we swore t