Lumberjack Yukiko Koyama cuts pine trees on a hillside overlooking Matsumoto City in Nagano prefecture on Japan's central Honshu island. Koyama's employment at a local timber mill is partially subsidized by a government program to get more Japanese women into the workforce. Yo Nagaya/NPR hide caption

itoggle caption Yo Nagaya/NPR

Security personnel guard the entrance of a road leading to a trail on Mount Ontake in Nagano prefecture Tuesday, three days after the volcano erupted in central Japan. Jiji Press/AFP/Getty Images hide caption

itoggle caption Jiji Press/AFP/Getty Images

A photo taken from a Kyodo News helicopter shows Japan's Self-Defense Forces personnel rescuing climbers who were in critical condition near the top of Mt. Ontake Monday, before rescue operations were suspended. Kyodo /Landov hide caption

itoggle caption Kyodo /Landov

The Japanese whaling ship Yushin Maru leaves Shimonoseki port in Yamaguchi Prefecture, southwestern Japan, last month. Japan's prime minister says he wants to expand whaling operations after they were temporarily scaled back. Kyodo/Landov hide caption

itoggle caption Kyodo/Landov

President Obama speaks at a joint news conference with Japan's Prime Minister Shinzo Abe in Tokyo on Thursday. Obama reinforced the U.S.-Japan security commitment. Junko Kimura-Matsumoto/AP hide caption

itoggle caption Junko Kimura-Matsumoto/AP

President Obama shakes hands with Japanese Prime Minister Shinzo Abe before a private dinner at Sukiyabashi Jiro in Tokyo on Wednesday. At Sukiyabashi Jiro, people pay a minimum of $300 for 20 pieces of sushi chosen by the patron, Jiro Ono. Jim Watson/AFP/Getty Images hide caption

itoggle caption Jim Watson/AFP/Getty Images