FORT WORTH, Texas - Lockheed Martin's second F-35 ground-test aircraft rolled out last week at the Fort Worth plant and in April will head to the BAE Systems Structures Laboratory in Brough, England for static testing. This F-35, AG-1, is a static test article for the conventional takeoff and landing version that will be flown by the Air Force and eight F-35 partner nations. The F-35 is being developed by Lockheed and principal partners Northrop Grumman and BAE Systems. Two interchangeable F-35 engines are being developed by Pratt & Whitney and GE Rolls-Royce. (Source: Lockheed Martin, 12/19/08). Lockheed Martin, BAE Systems, Northrop Grumman, Pratt & Whitney Rocketdyne and Rolls-Royce have Gulf Coast operations; Eglin Air Force Base, Fla., will be home to the F-35 joint training center.