Tremors....??

I was awakened this morning when the house shuddered and the metal garage doors rattled against each other. I thought perhaps it was a tremor....never having experienced one. Was I worried...NO!....it was morning, the brain function is at a minimum at that time!
It was NOT a tremor, it was a high brick retaining wall falling on the house next to it! A few children were taking to the hospital just to be safe, but there were no serious injuries. If it had happened later, there would have been many children going by on their way to school.
Thankfully, that was not the case!