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.

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For a midcareer leader, this may be a time to move back to the creative ferment phase, accepting that the ground is shifting within her industry, that there are no guarantees that her job will still exist in the same form within just a few more years, but that untold new possibilities may exist.

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Deterrence: The first phase system should be comprised of ground and space-based sensors and interceptor systems.

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"Together, we proved that a human in freefall can break the speed of sound returning from near space, going through a transonic phase and landing safely on the ground, " said Dr Jonathan Clark, a former space shuttle flight surgeon and the Red Bull Stratos medical director.

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The need for ground forces in the post-conflict phase is a different question.

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It is one of the "ground zeros" in America for the latest phase of globalization of the economy.

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The implication is that the last phase of the campaign may be like trench warfare, with small amounts of ground shifting back and forth between the two candidates, day by day.

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"The closest will be adjusted when we are through the commissioning phase, " explained Dr Zink, who is project manager for the TanDEM-X ground segment.

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