Milford Police were tipped to a possible impaired driver on Silicato Parkway Tuesday night around 8:30. The citizen reported a Tahoe being operated in an aggressive manner. Police found the Tahoe in a nearby parking lot, contacted the driver who appeared impaired and spotted drug paraphernalia. The officer also learned that the driver, 36 year old Patrick Carey of Milford had previous DUI convictions. Carey was charged with his 4th offense DUI and other offenses.