Nearly 600,000 people have signed up for the Great SouthEast ShakeOut.
This is the first simultaneous earthquake drill to be held in Virginia, Georgia, South Carolina, North Carolina, Maryland and Washington, D.C.
The event is set for Thursday at 10:18 a.m.
Emergency management and preparedness experts agree that drop, cover, and hold on is the safe response to reduce injuries and deaths during earthquakes in the U.S.