CROIX DES BOUQUETS, HAITI -- Aid organizations struggling to shelter more than 600,000 Haitians made homeless by the earthquake said Sunday that there are only 10,000 tents in the country, and that they remain in a warehouse, relegating the population to many more nights in squalid camps and on street sidewalks. "We have a severe shortage of tents," said Niurka Pineiro of the International Organization for Migration, the lead agency tasked with creating immediate solutions for Haitians left without a roof over their heads.