(NEWSER) – North Korea's missile warnings have the US building up its defenses, insiders tell Fox News. The Pentagon is preparing 14 new ground-based interceptors in Alaska and California. The result—44 total interceptors—is in line with Bush administration plans. President Obama had halted deployment at 30 when he entered office. "North Korea’s shrill public pronouncements underscore the need for the US to continue to take prudent steps," says a Pentagon rep.