And so they're just going to keep going until they get to a specific point to call a halt for another phase of the operation.

CNN: Grange: Troops 'on a high'

The final phase of construction ground to a halt last year in a public dispute over funding between the builder, the Port Authority of New York and New Jersey, and the nonprofit foundation that raised the money for the project.

WSJ: Debra Burlingame: The 9/11 Memorial Museum Held Hostage