This article originally appeared on Undark.
Hundreds of thousands of people go missing each year in the United States. And, for more than a decade, law enforcement officers, medical examiners, volunteer sleuths, and families have been able to use the National Missing and Unidentified Persons System, or NamUs, to seek answers.
Established in 2007, NamUs offers public databases and free forensic services. Since its inception, according to the program's website, it has helped resolve more than 2,700 missing persons cases and identify more than 2,000 bodies. Tens of thousands of open cases remain in the system.
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"I can't imagine working without it," said Bruce Anderson, a forensic anthropologist at the office of the medical examiner in Pima County, Arizona.