Virtually every major project under the National Nuclear Security Administration’s oversight is behind schedule and over budget—the result, watchdogs and government auditors say, of years of lax accountability and nearly automatic annual budget increases for the agency responsible for maintaining the nation’s nuclear stockpile. The NNSA has racked up $16 billion in cost overruns on 10 major projects that are a combined 38 years behind schedule, the U.S. Government Accountability Office reports. Other projects have been canceled or suspended, despite hundreds of millions of dollars already spent, because they grew too bloated. …