Complex sentence: From 1979-1998, Jenkins worked on the Indianapolis Motor Speedway Radio Network, holding various positions including the backstrech, turn four, and chief announcer from 1990-1998.
Split into simpler sentences: From 1979-1998, Jenkins worked on the Indianapolis Motor Speedway Radio Network. He reported various positions including the backstrech, turn four, and served as chief announcer from 1990-1998.