network. half of all children with autism spectrum disorders have attempted to wander at least once after the age of 4. of those who did, 53% of them went missing long enough to cause concern. how commonplace is what we're seeing right now? how common place is this within the autism community? >> it's way too common. that was our study. we did that. one of the problems we autistic individuals, they don't understand danger. they'll wander because they are curious or distracted. we see these cases playing out more and more now across the country. just this week, autistic individuals found in hospitals. we have got to he had indicate the teacher population, first responders, community, neighbors of people living with a child or adult who is autistic so they understand that this is possible and quite common. >> mark -- go ahead, mark.