Complex sentence: Part of the past bombing practice grounds became now property of the U.S. Natural Resources Conservation Service (NRCS), some to the Department of the Interior, and rhe remaining part was given to the government of Vieques.
Split into simpler sentences: Part of the past bombing practice grounds became now property of the U.S. Natural Resources Conservation Service (NRCS). The remaining part was given to the government of Vieques.