Revisions to the wing and fin areas are in progress to improve longitudinal and directional stability in work. Reviews and refinements to designs to reduce the weight increases due to these changes plus estimated weights of the control system are progressing on an expedited basis. Studies to improve the longitudinal and directional stability as a result of the 18 scale wind tunnel testing have been completed. The wind tunnel program, design, fabrication and test has been revised reflecting the necessary redesigns as a result of the 16 scale model test data. The 15th scale powered wing tunnel modifications components have been shipped to the test facility. Modified parts for the 16 scale were also completed and will be shipped to the test facility. Some delays have been experienced in wind tunnel model testing due to higher priorities at the test facilities.