Valkyrie aims to provide the US warfighters with a high-performance-to-cost, stealthy, highly capable collaborative aircraft. Kratos says it can travel up to 3,000 nautical miles (3,452 miles) and ...

Designated the “F-16XL,” the obscure variant was first conceived in the late 1970s—and began flying in the 1980s as part of the US Air Force’s Enhanced Tactical Fighter competition. It was hoped that ...