Volunteering often plays a pivotal role in the recovery effort following natural disasters, such as tsunamis, floods, droughts, hurricanes, and earthquakes. For example, the 1995 Great Hanshin-Awaji earthquake in Japan was a watershed moment, bringing in many first-time volunteers for earthquake response. The 2004 Indian Ocean earthquake and tsunami attracted a large number of volunteers worldwide, deployed by non-governmental organizations, government agencies, and the United Nations.