Lockheed Martin is courting the Air Force with a U-2 replacement, but service officials are not expressing enthusiasm for a new platform. While Lockheed has not made a formal proposal yet to the Air Force, the company presented its high altitude TR-X program to the media Sept. 14. The company is proposing a stealthy, high altitude intelligence, surveillance and reconnaissance platform which would leverage the existing U-2 engine, according to Scott Winstead, Lockheed’s strategic business manager for the U-2 program...