Orlando SeaWorld Trainer Killed - 10News Investigates the History of Killer Whale Attacks

SeaWorld trainer Dawn Brancheau was killed February 24th, 2010 by Tilikum, a 12,000 pound male orca. 10News San Diego investigates the history of SeaWorld orca attacks, and why crucial information about the killer whales’ health and behavior, is kept from their trainers.