Well, here´s a clue about the Haliburton part:

[link to www.chron.com]

Sept. 1, 2005, 8:30PM
AROUND THE REGION

CONSTRUCTION
Halliburton hired for storm cleanup
The Navy has hired Houston-based Halliburton Co. to restore electric power, repair roofs and remove debris at three naval facilities in Mississippi damaged by Hurricane Katrina.
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Halliburton subsidiary KBR will also perform damage assessments at other naval installations in New Orleans as soon as it is safe to do so.

KBR was assigned the work under a "construction capabilities" contract awarded in 2004 after a competitive bidding process. The company is not involved in the Army Corps of Engineers´ effort to repair New Orleans´ levees.