But for Meara, the son of a New York City firefighter, the vivid memories stretch beyond that morning to the days and weeks that followed.
In a story from the New York Post, Meara recounts the aftermath of that horrific day for his family and his father in particular, who was based in the Bronx with the FDNY at the time of the attacks.
“Once [my dad] came home we were so happy to see him and then I remember sitting in our living room and he was going though names of firemen that were missing at the time, and it was a lot of people that we knew," Meara told the New York Post. "It was a scary time, a sad time.”
Read more about Meara's memories in the New York Post's story.