Clay Heighten, right, and Debra Caudy, left, embrace their autistic 19-year-old son Jon Heighten at their Dallas home.
Clay Heighten, right, and Debra Caudy, left, embrace their autistic 19-year-old son Jon Heighten at their Dallas home. LM Otero AP
Clay Heighten, right, and Debra Caudy, left, embrace their autistic 19-year-old son Jon Heighten at their Dallas home. LM Otero AP