FILE - In this Saturday, Feb. 20, 2016 file photo provided by U.S. Air Force, an unarmed Minuteman III intercontinental ballistic missile launches during an operational test at Vandenberg Air Force Base, Calif. Like a giant pen stroke in the sky, an unarmed Minuteman 3 nuclear missile roared out of its underground bunker on the California coastline Friday, Feb. 26, 2016, and soared over the Pacific, inscribing the signature of American power amid growing worry about North Korea’s pursuit of nuclear weapons capable of reaching U.S. soil. When it comes to deterring an attack by North Korea or other potential adversaries, the missile is the message. (U.S. Air Force via AP, File)