There was only a knot of people on July 27, in a corner of the cargo area at New York's Kennedy airport, to help with the end of the adventure.
The last pieces from the Twin Towers still stored in Hangar 17, which had been exposed to the view of thousands, left under Passiak's watchful eye.
For six years, she coordinated the distribution of almost 2,800 pieces under the control of the site's owner, the Port Authority of New York and New Jersey.
There was a lot of steel, including several of the tridents, the distinctive forked steel structures on the facade at the base of the buildings, each weighing several dozen tons.
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In 2009, the Port Authority decided to distribute the objects to non-profit organizations and government entities for use in public memorial projects.
Already working at the 9/11 Memorial and Museum, Passiak was chosen to supervise the program.
"I was a senior in high school in Michigan when 9/11 happened. I had never been to New York City," she said.
Passiak had no close family connection to the victims of the attacks, or the police officers, firefighters and emergency personnel, nothing that could create a link, even an indirect one, with the attack.
"I didn't have a real concept of what the World Trade Center was, where it was," she added.
Retrospectively, this distance perhaps allowed her to completely plunge into the task without feeling emotionally overwhelmed.
Generally, "I think that I'm a very emotionally steady person," she said, "so I think that that actually helped with the job. I was able to remain calm."
Passiak and the Port Authority approved the requests of 1,567 different groups across the United States, many of them fire and police departments, schools and cities.
Requests for objects also were approved for 10 foreign countries, including Canada, China, Germany and Italy. Despite its long ties with the US, France is missing from the list.