Gen Robert Cone, the deputy commander of US troops in Iraq, told the BBC that the greatest assistance would be needed in the areas of logistics, command and control, intelligence, surveillance and reconnaissance.

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The Defense Supply Center at Columbus, one of three inventory control points operated by the Defense Logistics Agency, employs 7, 000 civilians and contract personnel.

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So right now the logistics of a new building are not as important as consolidating command and control, giving specific direction to the Department of Homeland Security and to these agencies to make sure that we fulfill the president's commitment to keep America as safe as possible.

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Having their own distribution and logistics network allows them to source products from local suppliers while maintaining strict quality control.

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This will create new issues for those companies in industries like logistics and construction where there is much interaction with officials, says Charles Hecker at Control Risks, an international risks consultancy.

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