Complex sentence: Its headquarters is a 30-story building located on the east bank of the Potomac River, overlooking the Capitol building in Washington, DC. The agency is comprised of over five thousand employees and scientists that often work around the clock on expeditions.
Split into simpler sentences: Its headquarters is a 30 story building located on the east bank of the Potomac river. It overlooks the Capitol building in Washington, DC. The agency is comprised of over five thousand employees and scientists that often work around the clock on expeditions.