Complex sentence: The Naval Oceanographic Office (NAVOCEANO), located at Stennis Space Center in south Mississippi, USA is comprised of approximately 1,000 civilian, military and contract personnel responsible for providing oceanographic products and services to all elements within the Department of Defense.
Split into simpler sentences: The Naval Oceanographic Office (NAVOCEANO), is located at Stennis Space Center in south Mississippi, USA. Its main purpose is providing oceanographic products and services to all elements within the Department of Defense.