A Missoula woman has been arrested on suspicion of delivering an envelope to the DirecTV call center that included satanic symbols, photos of a the human resources worker who fired her and a white powdery substance that turned out to be table salt. Jail records show 24-year-old Aaron Kristen Danno was expected to appear in court Tuesday on charges of criminal endangerment, assault with a weapon and disorderly conduct after the letter was brought to the call center Monday afternoon, triggering the evacuation of 400 employees.Missoula County sheriff’s Detective Jason Johnson says Danno told officers she wanted to make the human resources worker “nervous for a few days.” Danno was booked into jail Monday night and was being held on $50,000 bail.