Scare at the Sub Base GROTON -- Police and fire units have set up a perimeter at the Groton Sub Base. Bomb-sniffing dogs have been also called out to the scene. Navy authorities are providing very limited information as to what happened Monday morning. Crystal Lake Avenue and the military highway road along the river have been blocked off by local police. This provides access to Gate #1 where the incident involving a truck took place. A spokesperson for the sub base tells Eyewitness news that at 6:30 a.m. Monday a Navy dog trained to sniff for explosives sensed something...