lions and the stars, the killer whales. baird eventually became a trainer, working with the three killer whales. his favorite, a small male named tilikum. >> he was very easy to work with. he was very easygoing. learned quickly, learned well. >> reporter: among the other trainers, 20-year-old marine biology student kelty burn. she had just finished a show with the killer whales when she slipped and fell into their enclosure. >> they were a little surprised one of their trainers had seemingly jumped into the pool, although fallen. they were sort of excited about that. it was something completely out of the norm. >> reporter: witnesses say the whales, including tilikum, kept her from reaching the sides, repeatedly pulling her under the frigid water. >> they couldn't get her. finally, she didn't come up anymore. >> reporter: baird, a trained