CNN CNN Newsroom Live September 12, 2021 06:02:00
Never met and imagined how he might be today. >> my uncle firefighter michael christopher. even though i never met you in person, i still miss you a lot. mom always tells me the crazy, fun things you did. and i'm sure if you were here, i'd probably be doing them with you. >> this is a look at the 9/11 memorial at ground zero in new york. deep fountains bathed in yellow light where the world trade center once stood. ♪ amazing grace ♪ >> the 20th anniversary ceremonies were also held at the pentagon and in pennsylvania. all of them attended by the president and the first lady. we began our c...