Courtesy of the FBI & Department of Homeland Security:
The two officers tell me about a close call at the Taste of Chicago food festival last year. Millions attend the annual street feast, with Chicago-style sausage and pizza and tamales on sale in booths along the lakefront. As with all major public events, the JTTF helped plan the security profile. A JHAT —a Joint Hazardous Assessment Team —set up at the festival, dotting the area with devices that detect signs of a chemical or biological or radiological attack. Suddenly, one of the devices went off: There was a radiological hit on one of the sniffers near a row of porta-potties. For an hour, the JHAT frantically tried to determine if Chicago had been struck by a "dirty bomb" —a weapon that spreads lethal radioactive material mixed with conventional explosives. Finally, after an anxious hour, the hit was traced to a particular outhouse —and the cause of the positive alert was determined.
"Someone who had chemotherapy had just done a poop," DeRosa says.
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