dr. louis krouse from rush university medical center. the kind of trauma katie endured is incomprehensible for anybody who hasn't been through it. we don't know what happened to 5-year-old ethan in that bunker, what kind of condition he's in. generally speaking, though, what you know of 5-year-olds and aparentally he has aspergers, what are he and his family looking at in terms of recovery? >> it will be hugely variable. think about the whole process. this poor child started with the trauma of seeing this bus driver shot and killed. then being kidnapped, pulled away from his regular routine. a typical 5-year-old child would find this frightening. a child with aspergers, which is a form of autism, where kids often have a ridge ids quality of how they expect to do things, having difficulties with unfamiliar environments, unfamiliar people, and put exactly into that type of placement, where they have a routine level of anxiety where things don't go the way they want and put into a situation like he has, you know, it's very hard to tell how