PALM COAST, Fla. – For Kathleen Riley, the memory of September 11, 2001, is divided into two days—one defined by unimaginable tragedy and the other by an extraordinary sense of unity.

“The worst day was 9/11,” Riley said. “The best day was 9/12, because everybody came together. Everybody had one heartbeat.”

Twenty-five years later, Riley still carries vivid memories of the months she spent helping process human remains and personal belongings recovered after the terrorist attacks on the World Trade Center. She remembers the long hours, the overwhelming conditions and the determination of responders who refused to stop searching for something—anything—that might bring answers to a waiting family.

She also remembers meeting the man who would become her husband.

Retired New York Police Department Detective Sgt. Fred Manzolillo was standing outside one of the World Trade Center towers when it collapsed.

“The building fell on top of me,” he said. “I got out.”

Others standing near him did not.

For Manzolillo, who supervised the NYPD Arson and Explosion Squad, surviving that day brought a profound awareness that his life had been spared for a reason.

“It’s very meaningful that God gave me a chance to stay around, because people who were standing next to me were gone,” he said. “God has a purpose.”

In the weeks that followed, that purpose became the search for the missing and the painstaking work of recovering and identifying the dead.

Manzolillo was assigned for six months to search, recovery and identification efforts. His responsibilities took him from the pile at Ground Zero to the New York City Office of Chief Medical Examiner on 30th Street, where remains and personal effects were brought for examination.

Riley, a corrections officer working at a men’s prison, volunteered for a detail assisting at the medical examiner’s office. Some officers found the assignment too emotionally overwhelming to continue. Those who were able to endure the work were asked to remain.

“Don’t ask me how I handled it,” Riley said. “I was one of God’s tools. That’s all I can tell you. You just did it. You were trying to help.”

Searching for answers

Riley spent approximately four months assisting with the recovery mission.

The work was unlike anything she or her fellow officers had experienced. Responders handled human remains, fragments and personal belongings, carefully documenting and preserving anything that might help identify a victim.

“We were never trained for that,” Riley said. “I don’t think anybody was trained for that.”

Protective masks quickly became difficult to use because they fogged, making it nearly impossible to see. Supplies were strained by the enormous scale of the disaster, and outside businesses donated materials to help workers continue.

Still, Riley remained focused on the families.

She recalled cleaning recovered jewelry and looking for identifying marks that might allow someone to be returned to loved ones. Even the smallest detail mattered.

“Somebody has to identify this,” she remembered thinking. “You just wanted to help bring closure to the families.”

Calls came from friends and acquaintances desperately seeking information about people who had worked in the towers. Each time remains arrived, responders searched for signs that could connect the person to a name.

“You wanted to find something,” she said. “I had phone calls because I had friends and people I knew who were in the buildings. Everybody was calling.”

When a fallen member of service was brought in, Riley recalled, the remains were accompanied by an American flag—one final gesture of respect for someone who had answered the call.

The responders did not allow themselves much time to absorb what they were seeing. Their attention stayed on the mission: receive the remains, preserve the evidence and help make identification possible.

“I had one purpose,” Riley said. “Trying to get everything to the people, to give them closure—getting the bodies in and bringing them where they had to go. That was it.”

Manzolillo understood that emotional discipline. In police and corrections work, he said, responders learn to concentrate on the immediate task, especially when a crisis is still unfolding.

“You don’t have time to think about the emotional part of things as it’s happening,” he said. “If you do, you’re not going to be able to do the job.”

Heroes on the pile

Manzolillo’s detectives worked on the pile at Ground Zero for 50 consecutive days.

During the earliest weeks, crews dug for hours through twisted steel, concrete and debris, hoping to find survivors and later searching for remains that could be returned to families.

“In the first couple of weeks, we were digging through the pile for nine hours, and you would come up with something maybe the size of a football,” Manzolillo said. “You were hoping you had found somebody.”

He knew two of the police officers who died that day and many others who were lost. One of the stories that remained with him was that of NYPD Officer John Perry.

Perry had completed law school, passed the bar and was preparing to retire from the police department on the morning of September 11. He reportedly was at police headquarters with a pen in his hand, ready to complete his retirement paperwork, when news of the attack reached him.

Instead of continuing with the life waiting ahead of him, Perry ran toward the danger.

“He was seen going down toward the trains to help clear the trains,” Manzolillo said. “He could have had a whole different life, and he made the choice to go and help.”

Perry’s remains were recovered later that year.

In addition to being a police officer and attorney, Perry was a member of the Screen Actors Guild and had appeared in movies and television programs. Every so often, Nanzolillo will see him appear on a screen—a living image of a friend and fellow officer who chose service over safety.

Other responders made similar choices. Manzolillo recalled a recently retired detective who had returned to testify in court that morning. Although he was no longer obligated to serve, the detective cleared out his former office, put on his gear and joined the recovery effort for two weeks.

“He didn’t have to,” Manzolillo said. “He came back to help us.”

One heartbeat

The unity Riley witnessed extended far beyond law enforcement and rescue crews.

People across New York and throughout the country donated food, equipment and supplies. Strangers volunteered. Responders from different agencies worked side by side, often without being asked.

Even inside the prison where Riley worked, the effects were unmistakable. Some incarcerated individuals had relatives who worked in or around the World Trade Center. For a time, she said, the usual tensions subsided.

“They were all helping,” Riley said. “There were no problems. Everybody came together.”

Manzolillo described that response as part of a deeply rooted American resolve—the instinct to stand together when the country is threatened.

“Even though it was a tragedy, it was very gratifying to see how people united,” he said.

At the medical examiner’s office and recovery sites, those working the long shifts became more than colleagues.

“We became a family down there,” Riley said. “We all looked out for each other. ‘Are you OK?’ We just did it.”

Humor also helped them endure.

Manzolillo remembered one of his detectives setting up a board to count how many days they had worked. The joking and good-natured banter among the officers offered brief moments of relief from an otherwise relentless mission.

“New York City detectives are the funniest guys in the world,” he said. “We needed that.”

There was little opportunity to grieve while the work continued. The responders concentrated on the next recovery, the next piece of evidence and the next family awaiting news.

Only after their assignments ended did many begin to process what they had experienced.

Friendship becomes love

Riley and Manzolillo first knew each other through their work. They were two members of a much larger recovery family, connected by long shifts, shared responsibility and the instinct to check on the person working beside them.

Their relationship began to change after the group received tickets to a football game. Riley had never attended one, so the responders went together. Away from the medical examiner’s office and the daily urgency of the recovery operation, she and Manzolillo began talking.

The friendship they developed during tragedy slowly became something more.

“Life is too short,” Riley said.

What began as mutual support eventually grew into love and marriage.

Their relationship did not erase the trauma of what they had witnessed. Both still live with memories that can return without warning. Riley said revisiting Ground Zero and memorial locations remains difficult. The sights may have changed, but certain sounds, smells and emotions can immediately take her back.

The experience also deepened her faith.

“It brought me to my knees,” Riley said. “I did a lot more praying after that.”

She remains grateful that she was able to help, even when she struggles to understand how she endured it.

“I’m glad I was able to help,” she said. “You just did it. It was God’s work.”

For Nanzolillo, remembrance carries another responsibility: ensuring younger generations understand what happened. Today’s students were not alive on September 11, 2001, and many of their parents were children themselves. He believes the history of the attacks, the innocent lives lost and the sacrifices made by first responders must continue to be taught.

Approximately 50,000 people worked in the World Trade Center complex, he noted. They were simply going to work, commuting through the buildings or walking nearby when terrorists targeted them.

He wants future generations to understand not only how the attacks happened, but also how Americans responded—with courage, sacrifice and unity.

Riley hopes people remember that same spirit.

“The worst day was 9/11,” she repeated. “The best day was 9/12.”

September 11 brought Riley and Manzolillo into one of the darkest moments in American history. It tested their strength, changed their faith and left them with memories that will never fully fade.

But in the aftermath, it was among the responders who became family and the acts of service that carried them through. When the world fell apart, they found each other.