Cities in the Sand: U.S. Military Bases in Iraq

"At the Subway, workers from India and Bangladesh make sandwiches for American soldiers looking for a taste of home. When the sandwich makers' shifts end, the journey home takes them past a power plant, an ice-making plant, a sewage treatment center, a hospital and dozens of other facilities one would expect to find in a small city.

And in more than six years, that is what Americans have created here: cities in the sand."

Each of the big bases in Iraq has its own wastewater treatment facilities, power generators, retail shops and even bus routes.