Staff of the Jomo Kenyatta International Airport in Nairobi, Kenya unload four containers carrying northern white rhinos from the Czech Republic as they are transported to the Ol Pejeta Conservancy in Kenya on Sunday, Dec. 20, 2009. Four of the world's last known eight northern white rhinos landed in Kenya on Sunday and were transported to the game park where officials hope the endangered mammals will reproduce and save their sub species.