Complex sentence: Tests began 23 March 2009 with a Navy-built, 18,000-pound boilerplate when it was placed in a test pool at the Naval Surface Warfare Center's Carderock Division in West Bethesda, Md.
Split into simpler sentences: Tests began 23 March 2009 with a Navy-built, 18,000-pound boilerplate. It will be placed in a test pool at the Naval Surface Warfare Center's Carderock Division in West Bethesda, Md.