Those stealing food and water - or toothpaste to smear beneath their noses to mask the stench of rotting human flesh - are the least to worry the authorities.
Of greater concern? The hardened criminals who roam the streets after the largest prison break in Haiti's history.
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When the earthquake hit last Tuesday more than 3,000 inmates escaped from the National Prison of Haiti, in Port-Au-Prince. Reports are they took prison uniforms, prison vehicles, guns and ammunition. They killed at least four guards.
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CBS News obtained exclusive pictures of the inmates who set the prison on fire and ran to freedom. Only a handful of the prisoners have been recaptured.
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"These inmates pose a real that for the people of Port-Au-Prince," Pitts asked.
"Yes, yes. That's a fact," said Jean Joseph Cande of the U.N.
"Just roaming around with guns?"
"Yes, they are very dangerous."
Whether it's the U.N. or relief agencies from around the world - few if any -humanitarian groups now travel around without armed security. Experts say the gang members who escaped Haiti's prison pose a special danger.
"We're talking about people who kidnapped children - who mutilated captives," said Robert Perito, Director of the Haiti Program at the United States Institute of Peace. "These are very dangerous people."