A man charged with starting one of the wildfires in Spokane, Washington, that have destroyed hundreds of buildings planned the crime for weeks and researched when the weather would be best for igniting it, police said. In an interview after his arrest, Aaron Farinacci said “fire is powerful, beautiful, and that things that go through fire experience a kind of rebirth,” Spokane County Detective Michael Drapeau wrote in a court filing Wednesday. Farinacci, 37, is charged with starting the Old Trails fire, one of three blazes in the Spokane area that have burned more than 850 buildings, destroying whole neighborhoods and streets. …Farinacci served about a decade in prison after killing his father in Mesa, Arizona, in 2010. He also shot himself. He was charged with murder but pleaded guilty in 2012 to manslaughter and aggravated assault. Farinacci’s lawyer repeatedly raised concerns about his mental health during the case.