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| Special Agent Oscar C. Hanson United States Department of Justice - Bureau of Alcohol, Tobacco, Firearms and Explosives U.S. Government End of Watch: Wednesday, March 28, 1928 Biographical Info Age: Not available Tour of Duty: Not available Badge Number: Not available Incident Details Cause of Death: Struck by train Date of Incident: Wednesday, March 28, 1928 Incident Location: South Dakota Weapon Used: Not available Suspect Info: Not available Special Agent Hanson and Deputy Marshal Edward Flanery, of the United State Marshals Service, were killed when their vehicle was struck by Omaha passenger train No. 80 near Humboldt, South Dakota. It is believed that the driver of the vehicle could not see the approaching train as a result of a heavy snowfall at the time. The officers were en route from Sioux Falls to Salem and Carthage in order to serve several warrants. Related Line of Duty Deaths |  |