A police vehicle driven by San Diego County Deputy Sheriff Ben Chassen reads the license plates of cars in a parking lot Wednesday, Sept. 17, 2014, in San Marcos, Calif. Facing a heroin epidemic, Maryland officials will spend $120,000 to buy license-plate readers to check the tags of cars coming into Ocean City, believing it can help halt some of the drugs flowing to the Eastern Shore, which has been particularly hard-hit. (AP Photo/Gregory Bull) **FILE**
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