By Elizabeth Mohr
St. Paul Pioneer Press
MAPLEWOOD, Minn. — Sgt. Joseph Bergeron was "a cop's cop" who loved his job and was always willing to help lift a colleague's spirits.
The 26-year veteran of the Maplewood Police Department was shot and killed in what was described as an ambush attack Saturday, after he responded to an early-morning report of a carjacking.
Slain Minn. officer mourned by family, friends