As I was setting up for it at the fire station, our fire department got called out to a "small" grass fire that moved into a swamp and woods and endangered several homes, growing so large that 7 fire stations were dumped out to control it. I was very disappointed to be stuck at the station, because I love fighting brush fires ... but also relieved, because it means there were no firefighters in the audience as I gave my talk. Heck, I expected we'd get a call during the presentation! Murphy's Law of firefighting.
Also, it was my first chance to wear my Class B uniform. :-)