The annual LAFD 9/11 Remembrance Ceremony took place at the Frank Hotchkin Memorial Training Center in Elysian Park.
"The story, images and human loss of life will always trigger memories of terror and fear," said LAFD Chief Ralph Terrezas.
Terrazas spoke as he stood in front a steel beam salvaged from the World Trade Center. It was a vertical support once connecting the lobby to the second floor on the South Tower.
9/11 anniversary: US marks 9/11 with somber tributes; Trump speaks at PA site
"The men and women of the Los Angeles Fire Department remember the 343 New York City firefighters killed that day while rushing into those two doomed buildings," he said.
The mayor of Paris, France also spoke, saying, "I feel your pain, and I share your grief."
From all those who lost their lives on 9/11, Welles Crowther was the only one to be mentioned by name during Tuesday's ceremony. The 24-year-old investment banker had applied to be a New York firefighter. He was later identified as "the man in the red bandana," who helped save at least five and as many as 18 people that day.
L.A. Mayor Eric Garcetti spoke about strength in the years since, with a message to never forget.
"God bless the fallen, God bless the responders, God bless America," he said.