set up to do a dive shamu performance with dawn. >> likely she saw what had gone on during the main show, and so she had probably felt more pressure to do a good show. when you watch the whole video, you can see that tilikum is actually really with dawn in the beginning of the video. there's a couple of behaviors she asked can him to do where tilikum jumps right in and does exactly what she asks him to do. >> we're going to show you how agile these guys are. >> there seemed to be a point in the session where things went south, so to speak. and my humble opinion, it was at that missed bridge -- whistle bridge on the perimeter peck wave. >> she asked him to basically go all the way around the pool and wave his pectoral flipper.