Complex sentence: McGehee graduated from the Nuclear Power School and Submarine School, and served as a lieutenant in the U.S. Navy on the USS John Marshall (SSBN611), a nuclear submarine, in various engineering positions.
Split into simpler sentences: McGehee graduated from the Nuclear Power School and Submarine School. He served as a lieutenant in the U.S. Navy on the USS John Marshall (SSBN611), a nuclear submarine, in various engineering positions.