ABOARD THE USS THEODORE ROOSEVELT (CVN-71) -- The Navy's recent testing of the X-47B suffered from a communication failure between the air vehicle and the control data unit. The service had planned to conduct six to eight touch-and-go flights and obtain navigation and air system performance data in more stressing conditions than it attempted during testing aboard the George H. W. Bush (CVN-77) in July, Inside the Navy reported Nov. 10. However, the X-47B air vehicle known as the...