National Security

June 8, 2010 7:29 AM

Two F-35 fighter models make test flights

After months of intense scrutiny over delays and rising costs, Lockheed Martin seems to be making consistent progress on the F-35 joint strike fighter program as it reached two milestones in as many days. The first test version of the F-35C, designed for use aboard Navy aircraft carriers, made its initial, 57-minute flight Sunday. On Monday, the fourth short-takeoff-vertical-landing F-35B, designed for the Marine Corps, was flown to the Navy's Patuxent River, Md., test center.

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