The man accused of texting about molesting children last week on a Southwest Airlines flight was allegedly planning to drug and rape at least two children, according to a federal complaint. An alert preschool teacher sitting behind 56-year-old Michael Kellar took images of the text messages and then told members of the flight crew. The messages allegedly detailed graphic plans to sexually abuse and record children. He was texting with a woman identified as Gail Burnworth, police later said. Officers in San Jose detained Kellar when the flight landed.