He is survived by his wife and two-year-old twin daughters.
Officer Arn was shot and killed as he responded to a call of a man walking down the street firing an assault rifle. Officer Arn was the first officer on the scene and was shot while still driving his cruiser. The suspect continued walking down the street, shooting randomly, until he was cornered by other responding officers who shot and killed him. Officer Arn is the first Saint Joseph officer to be shot and killed in the line of duty since 1944.
Officer Bradley Arn was a Gulf War veteran.
There are currently no tributes for Officer Bradley Thomas Arn.