It is the most fateful moment in a movie that purports to present a searingly accurate account of the 2012 attacks that left four Americans dead in Benghazi, Libya: a scene in which the highest-ranking CIA operative at a secret agency compound orders his security team to “stand down†rather than rush off to rescue U.S. diplomats under siege less than a mile away. According to the officer in charge of the CIA’s Benghazi base that night, the scene in the movie is entirely untrue. “There never was a stand-down order,†said the base chief known as Bob, speaking publicly...