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Mainland borders are not the only targets the Department of Homeland Security must protect. In Puerto Rico, agents keep a high-value drug seizure from South America secure as they transport it back to San Juan. They also use a DASH 8 plane and radar to find and seize a small drug-running boat in the dangerous Mona Passage. Finally, agents stall for time as they await information from the NYPD on a suspected drug smuggler who just entered Puerto Rico from the Dominican Republic.