the animals in the park are protected by human rangers and wildlife researchers. at the same time humans are their greatest enemy. so there's a new threat for the elephants in the park it appears that when they come into contact with humans they can contract the human form of tuberculosis. veterinarian peter bus is searching for elephant herd to try to find out how many of the animals have. you need the helicopter actually just to control it and keep it in the area where you can access it from the ground because generally one side of it they want to take hold and you are in the time it takes them to go to sleep.