How some people can end up living at airports for months -- even years -- at a time

In January, local authorities arrested a 36-year-old man named Aditya Singh after he had spent three months living at Chicago's O'Hare International Airport. Since October, he had been staying in the secure side of the airport, relying on the kindness of strangers to buy him food, sleeping in the terminals and using the many bathroom facilities. It wasn't until an airport employee asked to see his ID that the jig was up.
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