Half of All Autistic Kids Will Run Away; Tragedy Often Follows

Within hours one day in April, two children went missing hundreds of miles apart from each other.On the surface they appear to have little in common.

Savannah Martin, 7, died in 2011 after
she drowned in a pond near her home.

Angelo Messineo is a 16-year-old from Georgia. He was found alive on a horse farm four days after he disappeared from school on April 16. Alyvia Navarro, 3, of Wareham, Mass., was pronounced dead hours after she was reported missing, drowned in a pond near her grandmother's home, on the same day.

They are just two of the thousands of children who went missing last month.But Angelo and Alyvia have one thing in common, and it's a trait shared with at least one child who goes missing every day in America. They are autistic.