Built out of carbon fiber, the DD(X) integrated deckhouse test article, pictured here at China Lake, Calif., is a one-of-a-kind technology demonstrator consisting of the forward and aft sections of the deckhouse, including an aft face that is fully populated with antennas. The DD(X) National Team,led by Northrop Grumman Corporation, has reached another milestone by completing fabrication and radar cross-section testing on the integrated deckhouse test article. forward and aft sections of the deckhouse, including an aft face that is fully populated with antennas that were supplied by potential subcontractors. engineering development model confirm we continue to meet and exceed the planned targets and objectives," said Brian Cuccias, Northrop Grumman vice president and DD(X) program manager.