9/11’s failures led to a first-responder network — which will vanish if Congress doesn’t act

Sept. 11, 2001, was a day of unspeakable tragedy. Twenty-four years later, the images of the World Trade Center in flames still burn fresh in the minds of those who watched from afar and those who experienced it up close. But amidst the chaos was a group of heroes — firefighters, police officers, paramedics and…