U.S. defense officials are saying that China's military has conducted a second flight test of its Dong Feng-41 (DF-41) long-range missile, capable of hitting targets in the United States with a nuclear warhead. When fully deployed, a single one of these missiles will be capable of carrying up to 10 nuclear warheads, each targeting a different location. Nothing new, as -according to a report by the Air Force National Air and Space Intelligence Center- "China has the most active and diverse ballistic missile development program in the world. It is developing and testing offensive missiles, forming additional missile units, qualitatively upgrading missile systems, and developing methods to counter ballistic missile defenses. The Chinese ballistic missile force is expanding in both size and types of missiles."