Detecting counterfeit bills [Pictures]
Retired Howard County police officer Martin Johnson volunteers his time to train county Police Department recruits to recognize "the tens of thousands of fraudulent identity documents that are out there," he said. He also teaches them how to spot counterfeit money.
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Martin Johnson is a retired county cop working as a consultant to detect fake money, driver's licenses, immigration cards, etc. He travels around the country giving testimony and lectures. He looks at counterfeit money and fake Maryland drivers licenses.