Look closely at the foreigners buzzing around a hospital tent above one of Haiti's biggest earthquake-refugee camps and a face stands out: There, carrying the box of supplies, that's Sean Penn. Now he's guiding a Haitian girl to waiting doctors. Now he's lobbying the chief of UN peacekeeping operations to provide better security for the camp's 45,000 people. And now he's talking to the press. “These people are going to have nowhere to go, by and large, in the rainy season,” the Oscar-winning actor told The Associated Press. “The efforts that we've seen...have been extraordinary - down the line. But this is an impossible kind of situation.” The 49-year-old actor came to Haiti about a week after the Jan. 12 quake killed a government-estimated 230,000 people and made 1.3 million homeless. He's left just a a few times since - mostly for Haiti-related meetings, he said, and to present the Oscar for best actress - and doesn't plan to leave again until mid-April. His blue-shirted workers with the newly formed Jenkins-Penn Haiti Relief Organization provide medical care, water filters and food. The group got a major boost Sunday in a visit by UN Secretary-General Ban Ki-moon. He toured the facilities with Penn and actress-turned