Complex sentence: The 45th Space Wing (45 SW) is a wing of the United States Air Force based at Patrick Air Force Base, Florida, whose mission is to assure access to the high frontier and to support global operations.
Split into simpler sentences: The 45th Space Wing (45 SW) is a wing of the United States Air Force based at Patrick Air Force Base, Florida. To assure access to the high frontier and to support global operations.