The $1.3-billion renovation of the UnitedStates military headquarters, the most complexand challenging reconstruction effort in recenthistory, spanned 20 years and was interruptedby the catastrophic September 11, 2001,terrorist attack. However, it was completedahead of schedule and under budget withoutdisrupting operations. The renovation of thisnational icon stands as an eloquent testament towell-planned and well-executed collaborationinvolving an extensive field of participants.
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