A Fresno, California, firefighter is in critical condition after falling through the roof of a burning garage in a frightening scene that was caught on video Sunday. The footage shows a wall of flames shooting up from the garage, engulfing Capt. Pete Dern after the roof gives way under his feet. CAUTION: The video above may be difficult to watch and contains some NSFW language. The Fresno Fire Department released the video to local media to highlight the extreme dangers firefighters face on a regular basis. Dern, 49, was pulled out of the flames within minutes by firefighters and bystanders. “We could hear people screaming.