Complex sentence: Her keel was laid down 21 January 1980, sponsored by Nancy Reagan, she was launched 25 April 1981, delivered 13 December 1982, and commissioned 22 January 1983.
Split into simpler sentences: Her keel was laid down 21 January 1980, sponsored by Nancy Reagan. She was launched 25 April 1981, delivered 13 December 1982, and commissioned 22 January 1983.