The soldier who tried to blow the whistle on an alleged plot to kill Afghan civilians for sport has been put in solitary confinement in a windowless cell for 23 hours a day, his family said. The father of Spc. Adam Winfield is objecting to the conditions at Joint Base Lewis-McChord south of Seattle, and wants the soldier moved to a different facility. Christopher Winfield said his son was separated from other defendants in the case about a month ago after he reported being threatened by one of them. He’s been in protective solitary custody since then, but conditions grew markedly worse last week when he was moved from a cell with access to a common area and television to one he’s locked in nearly all the time, his father said.