A project supported by the U.S Army Research Office is using elephants great sense of smell to their advantage. In South Africa, elephants are being trained like bomb dogs to be able to detect explosives, landmines, and poaches. A 17 year old elephant, Chishuru, was seen walking through a row of buckets and stuck his trunk in a bucket and raised his front leg when he found the bucket with a TNT laced swab. Then they are rewarded with marula, which is a piece of fruit. This sense was discovered when there were observations in Angola during years of civil war, that elephants avoided the heavily mined areas. Also a man had one of the females from the herd he observed track him down later.