The USGS provides scientific and technical expertise for volcano monitoring, eruption forecasting and response. USAID/OFDA is responsible for leading the U.S. government’s response to disasters overseas and has provided more than $33 million in support for VDAP since it was established.

VDAP works to support in-country scientists and agencies at the invitation of a host country. Since the program began, teams have deployed in response to 30 major crises, assisted counterparts with hundreds of additional volcanic events and strengthened monitoring and response capacity in 12 countries.
https://www.usgs.gov/news/30-years-saving-lives-volcanoes

The U.S. Geological Survey’s National Earthquake Information Center reports on more than 30,000 earthquakes a year worldwide, automatically detecting, locating, and characterizing events, providing alerts, maps of strong ground shaking, and impact estimates of potential fatalities and losses. These rapid earthquake information products, which enable the prompt mobilization of emergency resources by all levels of government and humanitarian organizations, depend on the high-quality seismic stations that make up the Global Seismographic Network.