Thoughts of the first responders who died on 9/11 weigh heavy on one Wisconsin man attempting to break a world record in honor of fallen police officers and firefighters. Nate Carroll is attempting to break the record of most push-ups done in a 12-month period by completing 1.5 million. On Saturday, Carroll put a good dent in his challenge by doing nine sets of 414 push-ups in honor of the 343 firefighters and 71 police officers who died on 9/11. Each set of push-ups was done at different police departments and fire stations in the greater Madison area. “It’s hard to believe it’s been 19 years,” Carroll said. Carroll’s challenge is a part of something bigger. He’s attempting to raise $1.5 million for the Tunnel 2 Towers Foundation’s Fallen First Responder Home Program.