Top Pentagon weapons technology development officials from the first Trump administration are pouring cold water on renewed calls for a space-based, boost-phase intercept capability as part of the second Trump administration's Golden Dome missile defense vision. Michael Griffin, former under secretary of defense for research and engineering and Lisa Porter, former deputy under secretary of defense for research and engineering, warn that the concept is not just impractical -- it is nearly impossible. “This is not engineering. This is physics,”...