Japan has grounded its F-15 fighters for the second time in three months after a fuel tank and parts of a mock missile fell off a jet on a training mission, officials said Saturday. Japan Air Self-Defense Force officials said that the flight suspension involves all missions except emergency scrambles and will last until the safety of Japan's 202 F-15 fighters has been confirmed. No one was injured in Friday's incident near Komatsu base in western Japan and the pilot landed safely. In July, Japan's F-15s were grounded after one of the jets crashed into the East China Sea. The...