2018 U.S. news in pictures from A to Z

V FOR VOLCANO

Ash emission is seen erupting from Halemaumau of Kilauea volcano on the Hawaii Island, the United States, on May 10, 2018. As the potential for "explosive eruptions" from the "smoking" Kilauea volcano is rising, which could spray "ballistic rocks" and ash over nearby towns, local authorities are putting extra emergency measures in place. (Xinhua/Tao Xiyi)