The Trump administration fired the heads of three federal agencies after the election, prompting one to claim he was retaliated against for disagreeing with some policy. The heads of the agencies that oversee the nuclear weapons stockpile, electricity and natural gas regulation and overseas aid were sent packing, NPR reported. The sudden departures included Lisa Gordon-Hagerty, administrator of the National Nuclear Security Administration, who was forced to resign Friday. She was the first woman to oversee the agency in charge of the nuclear stockpile. Last year, she was on the president’s short list as a possible replacement for former National...