Complex sentence: Baldy gained fame during the Our Lady of the Angels School Fire in December 1958 when he broadcast his observations from his helicopter above the scene and provided traffic instructions over the radio to fire and ambulance vehicles trying to reach the fire through Chicago's congested streets.
Split into simpler sentences: Baldy gained fame during the Our Lady of the Angels School Fire in December 1958 when he broadcasted his observations from his helicopter above the scene. He provided traffic instructions over the radio to fire and ambulance vehicles trying to reach the fire through Chicago's congested streets.