A Homeland Security investigator's unconventional approach to identifying an abused child demonstrates the power of combining digital surveillance with analog expertise.

Greg Squire's team at Homeland Security Investigations faced a digital dead end. For months, they'd tracked disturbing images of a girl they called Lucy circulating on dark web forums – encrypted spaces where predators share illegal content anonymously. The abuser meticulously cropped identifying features from photos, leaving investigators staring at generic bedroom backgrounds. Despite access to facial recognition technology and social media databases, digital tools failed to locate the 12-year-old victim.
"We had light sockets suggesting North America, but that spanned 29 states," Squire explains. "When Facebook told us they lacked tools to help scan their own platform despite having facial recognition capabilities, we had to look closer."
Greg Squire works with Homeland Security Investigations' elite child exploitation unit
The breakthrough came not through advanced algorithms, but through meticulous observation of mundane details. First, investigators traced a regional sofa visible in some images, narrowing possibilities to 40,000 households. Then Squire noticed the exposed brick wall behind Lucy in several photos – a detail others might overlook.
"I started Googling bricks and found the Brick Industry Association," says Squire. "Their willingness to help ordinary industries engage in this work created an unexpected pathway."
Brick expert John Harp identified distinctive "Flaming Alamo" bricks from decades-old sales records
Enter John Harp, a brick specialist with decades of industry experience. Within hours, he identified the distinctive pink-cast "Flaming Alamo" bricks from the 1960s-80s. Crucially, Harp explained the logistics of brick distribution: "They're heavy. Heavy bricks don't travel far." This physical constraint proved decisive.
Combining the brick's 100-mile distribution radius with the sofa purchaser database, investigators narrowed targets to 50 addresses. Social media scans revealed Lucy's connection to a convicted sex offender living in a home matching Harp's brick analysis.
Squire's team monitors dark web forums 24/7 for clues to identify abused children
The offender was arrested within hours and later sentenced to 70+ years. For Squire, the victory came at personal cost: "The work that gives you purpose can also erode you." After struggling with alcohol and mental health crises, he credits colleague Pete Manning with helping him find balance.
When Squire finally met Lucy years later – now an adult – she revealed she'd been praying for rescue at the exact moment investigators closed in. "You wish you could have told her we were coming," he reflects.
The distinctive brick pattern identified by Harp became the investigation's linchpin
The case underscores how physical world expertise remains vital in digital investigations. While Facebook cited privacy concerns for not deploying facial recognition, Squire's team proved that material clues – coupled with specialized human knowledge – can crack cases where technology stalls.
"What they see daily magnifies what I've seen a hundredfold," says Harp, a foster parent to over 150 children. His unexpected role highlights how ordinary professionals can provide extraordinary value in combating online abuse when traditional tech approaches hit walls – both digital and brick.

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