You know what police say about locking your car at night. It applies to schools, too. A burglar alarm at Middlesex Middle School got police to the scene, and quick enough for them to see two people through a second-floor window, but both ran through the building and escaped, police said. After police spotted the people in the building, a police dog and several more officers were called in to search the school. Police were alerted to the hijinks by the alarm at 11:32 p.m. on Friday, the day after Thanksgiving.