I just participated in the great Southern California Shake Out earthquake drill. It might seem lame to be an adult practicing duck, cover, and hold, but I think it was a good thing. I found a large, heavy, set of drawers next to my desk that is on rollers. I'd bet that it would be moving around during a large earthquake and could be a big potential hazard.

So if you haven't practiced duck, cover, and hold since you were in school. Now might be a good time. You might also want to checkout your overall emergency preparedness plan.