Ted Andrzejewski, the mayor of Eastlake, Ohio, and a Democrat, is also angry about the signs.

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Eastlake, Ohio, will unveil a monument that includes hundreds of pounds of contorted metal from Ground Zero.

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"I can remember very clearly being on airplanes in which the cockpit was separated from passengers by a curtain, " Eastlake said.

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Chuck Eastlake, a professor of aerospace engineering at Embry-Riddle Aeronautical University in Florida, said the technology for the reinforcements seems to be relatively basic.

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But he thrived at Eastlake, winning the club's junior title at the age of nine and even beating his father in a senior final when 13.

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