A guard collars a Somali refugee after he tried to jump the line at the World Food Program distribution center in the Ifo settlement at Kenya's Dadaab Refugee Camp, situated northeast of the capital Nairobi near the Somali border, September 1, 2011. According to WFP, they feed around 450,000 people via biweekly distributions at the Dadaab camps, which are the world's largest refugee operation. REUTERS/Jonathan Ernst (KENYA - Tags: SOCIETY RELIGION)