Some facilities that handle the U.S. nuclear weapons stockpile misplaced classified bomb components under their care, according to an Energy Department audit. The department's Inspector General also found there was confusion at the facilities over who was responsible for keeping track of weapons parts and recommended changes in how to better safeguard the parts. John Broehm, a spokesman for the department's National Nuclear Security Administration that oversees the U.S. nuclear weapons arsenal, said his agency disagreed with the recommendations. He said the parts, which he declined to identify, were later found. A summary of the IG's audit -- a little-noticed...