NEW YORK (AP) — Americans are marking 24 years since the Sept. 11, 2001, attacks with solemn ceremonies, volunteer work and other tributes honoring the victims.

Many loved ones of the nearly 3,000 people killed joined dignitaries and politicians at commemorations Thursday in New York, at the Pentagon and in Shanksville, Pennsylvania.

On Thursday morning, Denise Matuza, Jennifer Nilsen and Michelle Pizzo boarded a bus from Staten Island for Lower Manhattan — each wearing T-shirts emblazoned with the names and faces of their husbands, who died in the attack.

“Even 24 years later, it’s heart wrenching,” said Nilsen, whose husband, Troy Nilsen, worked at Cantor Fitzgerald on the 103rd floor of the World Trade Center. “It feels the same way every year.”

For Ronald Bucca, who lost his fa

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