By TAMMY WEBBER (Associated Press) As Texas wildfires burned toward the nation’s primary nuclear weapons facility, workers hurried to ensure nothing flammable was around buildings and storage areas. When the fires showed no sign of slowing, Pantex Plant officials urgently called on local contractors, who arrived within minutes with bulldozers to dig trenches and enlarge fire breaks for the sprawling complex where nuclear weapons are assembled and disassembled and dangerous plutonium pits — hollow spheres that trigger nuclear warheads and bombs — are stored. “The winds can pick up really (quickly) here and can move really fast,” said Jason Armstrong, the federal field office manager at Pantex, outside Amarillo, who was awake 40 hours straight monitoring the risks.