Everyone understands that flashing blue lights on a police car in Maine indicates but what do non-flashing lights mean?

GRAY, Maine — A passenger in a car in Maine fatally shot his mother before shooting at passing vehicles, killing another motorist and injuring two others, then died by suicide, state police said ...

GRAY, Maine (AP) — A passenger in a car in Maine fatally ... a spokesperson for Maine State Police. ___ Associated Press writer Holly Ramer in Concord, New Hampshire, contributed to this report.