Former FDNY Commissioner Dan Nigro shares heart-wrenching stories from Ground Zero, reflecting on the heroism of firefighters during the 9/11 attacks. He discusses the emotional toll and sacrifices made by 343 colleagues. Nigro highlights the chaotic rescue efforts in the South Tower, illustrating the unity and bravery of first responders despite overwhelming danger. The conversation also touches on the lasting legacy of bravery in the FDNY and the importance of community vigilance in the aftermath of tragedy.