The names of 72 law enforcement officers who died during the terror attacks on Sept. 11, 2001, were read aloud Friday morning, the 19th remembrance of the day tragedy struck in the form of three hijacked planes that crashed in New York City, Arlington, Va., and Shanksville, Pa.

The National Law Enforcement Officers Memorial Fund honored the fallen law enforcement heroes in Washington, D.C., in a ceremony that began shortly after 8:15 a.m. Friday, when Sgt. Steve Troyano and Detective Marc Mazzella from the Arlington County Police Department, who responded to the Pentagon on that fateful day, took turns reading aloud the victims’ names.

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“Together, our community of active and retired law enforcement … will ensure that the memorial fund continues its mission to honor the fallen, tell the story of our nation’s law enforcement, and make it safer through those who serve,” said Marcia Ferranto, CEO of the National Law Enforcement Officers Memorial Fund, at the start of the somber ceremony.

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Heroes’ names were read and wreaths were laid at intervals starting at 8:46 a.m., 9:02 a.m., 9:37 a.m. and 10:03 a.m., to signify when hijacked planes crashed into the Twin Towers at the World Trade Center in New York City, the Pentagon in Arlington and the field located in Shanksville.

In total, 2,977 people were killed on that day, including the 72 law enforcement officers and 343 firefighters.

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