Complex sentence: A track called "The Hammers" draws a yearly Off-Road racing group to the area, but recent expansion plans for the Twentynine Palms Ground Combat center from the United States Marine Corps threatens to close the area permanently.
Split into simpler sentences: A track called "The Hammers" draws a yearly Off-Road racing group to the area. Recent expansion plans for the Twentynine Palms Ground Combat center from the United States Marine Corps threatens to close the area permanently.