Complex sentence: It was constructed around the Donald Dodge and Grace Bell ranches, and served as a long hard-surfaced emergency landing airfield strip primarily used by military aircraft on training flights, and was approved by the United States Armed Forces.
Split into simpler sentences: It was constructed around the Donald Dodge and Grace Bell ranches. It served as a long hard-surfaced emergency landing airfield strip primarily used by military aircraft on training flights, and was approved by the United States Armed Forces.