Nevada participated in a statewide earthquake drill Thursday to help residents prepare for when a quake hits.
This is the first time the Great Nevada ShakeOut was held; the exercise has been staged in California for the past several years.
Organizers say 7.8 million people signed up for the Great California ShakeOut drill, which this year expanded to include Nevada and Guam.
Participants practiced the "drop, cover and hold" technique.
The one minute long drill includes practice responses by fire departments and other agencies. In the San Francisco region, sirens sounded and all Bay Area Rapid Transit trains expected to stop for one minute.
(The Associated Press also contributed to this report.)