It's getting cold outside so for our next event we are going to enjoy a temperature controlled indoor fly. To add to the fun, this event comes with a beer challenge. I will buy a case of beer of the winner's choice (within reason) for anyone who can get their drone to fly a pattern autonomously inside the gymnasium. Use of a VICON system does not count and will result in you having to buy beers for everyone else who shows up (since you obviously have a lot of money). Structured light solutions and grid patterns are welcome. Watchers without systems of their own and pilots whose drones are in the repair shop are always welcome.