Howard County Fire Department swore in its newest arson accelerant detection canine Friday. Beacon, a 2-year-old black Labrador from Maine, is the county’s fifth detection dog; there are only six in the state of Maryland. “Dogs like Beacon use their extraordinary sense of smell to detect accelerants such as gasoline, kerosene, lighter fluid,” said Howard County Department of Fire and Rescue Services Chief Louis Winston Jr. “What might take a human hours or even days, Beacon can help pinpoint in