Some believed me made it up for the film, but it’s a real thing. It’s a little like Christmas in a way. It happens all around the country in Laos, at the end of the dry season, which is hell for the people. The rocket fest is really about trying to break that season and bring water, so they can eat properly. It also features in the end of Bomb Harvest. We loved that is was so irreverent. That’s the beauty of it – you’re not sitting down on your knees, praying to the gods. You’re trying to piss them off by firing at them (laughs.) It’s an ancient Buddhist festival that’s evolved and works as a metaphor for the war.