F-22 fighter nearing boondoggle status

It's the most expensive fighter jet ever built. Yet the F-22 Raptor has never seen a day of combat, and its future is clouded by a government safety investigation that has grounded the jet for months.

The fleet of 158 F-22s has been sidelined since May 3, after more than a dozen incidents in which oxygen was cut off to pilots, making them woozy. The malfunction is suspected of contributing to at least one fatal accident.

At an estimated cost of $412 million each, the F-22s amount to about $65 billion sitting on the tarmac. The grounding is the latest dark chapter for an aircraft plagued by problems, and whose need was called into question even before its first test flight.

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