FILE - In this July 18, 1998 file photo, a trainer walks his camels after racing at the 'Desert 2000' camel race at Boulia in central Queensland, Australia. Mere months after the Australian government ordered the shooting of thousands of kangaroos to help control their population, officials are now considering sending marksmen into the Outback in helicopters to take aim at another fast-growing group of pests: camels. (AP Photo/Steve Holland, File)