Among the heroes of September 11th were female rescue workers who raced to the Twin Towers in the wake of the attack. Anchor and special correspondent Soledad O’Brien tells the stories of female law enforcement officers, fire fighters, EMS workers and others who spent their lives defying macho stereotypes as they fought for access to jobs that require them to risk their lives for others. Among the heroines is an African-American probationary firefighter whose company lost 7 of the 343 that died that day, and a young mother and decorated police officer last seen directing others to safety just before the WTC collapsed. O’Brien profiles these unsung heroes and, of the survivors, reports their present-day health struggles, their continuing mourning, and their determination to be prepared for the next attack.