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Nruddock, I agree about Jane's to an extent. Certain items such as advanced electronics/avionics/jamming devices are mentioned in trade publications, but their functionality and technology is covered by ITAR since it involves data crucial to national security. As for plastic models, I'm curious to see what may happen, since CMM (Coordinate Measuring Machine) machines are becoming more economical. One could, theoretically, trace the curves and datum lines of an aircraft, scale it, and make a mesh, which could be ran through CFD (Computational Fluid Dynamics) for aerodynamic analysis. A competing company or country can use this data to produce an aircraft comparable to the plastic model. As for Lockheed, I'm not sure what is their intent for the C&D. It could be a reputation thing, it could be for economic reasons. Since I don't work for Lockheed, I can't answer for them. As for Boeing, I'm not aware of any C&D letters, but I found this at the Boeing Corporate website: Trademarks and Service Marks Boeing, McDonnell Douglas, McDonnell, Douglas, North American Aviation, their distinctive airplane liveries, logos and product markings, and the products and services described in this Site (except those belonging to Boeing suppliers or licensors), are among the trademarks, service marks or registered trademarks owned by Boeing, and may not be copied, imitated or used, in whole or in part, without the prior written permission of Boeing. In addition, all page headers, custom graphics, button icons, and scripts are service marks, trademarks, and/or trade dress owned by Boeing, and may not be copied, imitated, or used, in whole or in part, without the prior written permission of Boeing. All other trademarks, registered trademarks, product names and company names or logos mentioned herein are the property of their respective owners, and may not be copied, imitated or used, in whole or in part without the prior written permission of such respective owners. Any request for grant of a license to use Boeing marks is subject to prior approval, and should be addressed to the Boeing Trademark Management Group at: trademarks@boeing.com.