The organization responsible for securing America’s highly sensitive nuclear sites has been suffering from a “chaotic” and “dysfunctional” security policy that has endangered the country’s nuclear sites and left them vulnerable to attack, according to a new report by the government’s watchdog group.The National Nuclear Security Administration (NNSA), which is tasked with managing the nation’s nuclear stockpile and securing classified research sites, has “increased risks and reduced security” over the past several years in a bid to reduce overhead costs, according to a new Government Accountability Office (GAO) report.Security vulnerabilities at these NNSA sites still persist two years after a...