Homeland security expert reacts to string of mail bombs

Kristen Johanson
October 24, 2018 - 12:40 pm
Joe Biden

Jarrad Henderson-USA TODAY NETWORK

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PHILADELPHIA (KYW Newsradio) — The work of figuring out who sent a string of suspicious devices to Democratic leaders now begins.

Investigators first try to determine what kind of threat the mechanisms may pose, says a former top homeland security advisor, Jack Tamarchio, who worked under former President George W. Bush from 2005 to 2008, specializing in threat intelligence.

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"They will begin an active forensic analysis on the bomb, and the contents of the bomb, which will tell, obviously, materials, often where the materials were purchased, maybe the identity of the purchaser," he said. "They have other radiation apparatus detecting and equipment that can look if, say for example, if there is a dirty bomb involved, which would be a nuclear or radioactive material attached to an explosive device."

They will then look for forensic evidence.

"They are going to look for latent fingerprints," he said. "They are going to look for anything that could be out there, even DNA samples. These can be harvested from inanimate objects."

And he says they will try to look for any serial numbers on the device to see if they can match materials on the device to a distributor or particular company.