stepdad are cooperating. >> that's right. >> at this point they're not suspects. we have seen a lot of strange behavior from her stepdad. it was caught on nbc cameras. he comes out, lays down on the driveway for a period of time, gets up, goes inside, comes back out, lays down. finally he ends up in the hospital. >> right. >> what kind of information or scenario might you glean from his behavior? >> you know, i've worked on hundreds and hundreds and hundreds of these cases. families act out in different ways. and so this could possibly be at that moment where maybe they received some information that there could have been someone found in the water. they weren't sure. and he came out and didn't know how to react to that. it could be him just overwhelmed with stress. it's just -- you know, again, folks in these types of situations act out in different manners, especially when a missing child is involved. and this is just a very sad case