september 11th. this station suffering huge losses that day. at the moment, i m on a high, because i feel my son s, you know, joy and exhilaration that this very evil man was captured and killed. by americans. you know? and i just i just feel his presence that he s just right on, good for the soldiers. i can hear him yelling and screaming. and he would be dancing in the streets today, my son. reporter: but that elation was mixed with deep emotion for her husband, al, who was also a firefighter for 40 years. we never can bring them back, but we can do everything we can to bring the people who were responsible to justice. and that s what happened today. it s a win for the united states of america. it s a win for everybody in the world, the free world, and hopefully we ll have some more wins and it makes it a little easier. i ll have respect for my military brothers. reporter: 30-year-old peter regan is now a firefighter in brooklyn, following the steps of
firefighters joining the celebrations in times square. for the families of the hundreds of firefighters who lost their lives on 9/11, today is a day that many thought might never come. mary snow is joining us from ground zero with some of their stories. wolf, you get a sense of euphoria around ground zero but also a sense of reflection where people are placing flowers behind me at st. paul s, and american flags. and firefighters and families of firefighters remembers the 343 firefighters killed on september 11th, this is definitely a day of mixed emotions. it was the day they d been waiting for. maureen and al santora came to there firehouse where their son christopher worked. he was one of the firefighters killed on september 11th. this station suffering huge losses that day. at the moment, i m on a high because i feel my son s, you know, joy and exhilaration that