Ed Bergen, a retired New York City firefighter, shows a picture inside of his fire department cap of his friend and firefighter Michael Carroll, who lost his life after 9/11 attack, at his home in Las Vegas, Wednesday, Sept. 1, 2021. Bergen responded to the 9/11 attack, the day after he had officially retired on Sept. 10, 2001. (Erik Verduzco / Las Vegas Review-Journal) @Erik_Verduzco