The desert base you command is on high alert for UFO traffic. You're walking with your commanding general when a speck appears over the ridge: you point, both pairs of eyes follow. To your surprise it's a biplane, no a triplane, painted white, buzzing in low, engine sputtering. He's right overhead attempting an exhibition: starts into a loop, fails, stalls, crashes directly into the subway entrance where the wreck blocks the escalator. Men run from all directions toward the crash. But see? The craft is not a triplane, it's a Korean War era helicopter with long tail. The pilot walks away, dusting himself off.