Shakey Ground

I woke up in the night at 3:55 am to the jostling of my bed. No wait, it wasn't just my bed, it was my building... actually the whole base was rumbling. I knew right away it was an earthquake!

It lasted about 30 seconds and was just a subtle oscilation, not violent (5.7 on the Richter scale). However, it did make me wonder if my building (which is just a bunch of connex boxes stacked 3 stories high) would sustain this tremor. But soon it was over and I just went back to sleep. Most people didn't even wake up, or if they did, they thought it was their bunkmate rustling around unnecessarily in the middle of the night.

Here's a link to some more info:
href="http://neic.usgs.gov/neis/last_event/world_afghanistan.html">http://neic.usgs.gov/neis/last_event/world_afghanistan.html