Somehow in all these years I've never needed to preside over a balloon drop effect until now... Am I crazy to require a documented (I)FR net (which seems to eliminate all the time-saving commercially available pre-rigged balloon drop nets I see available) and what about the balloons themselves? The trick happens overhead in a theater. Seems like the rig wouldn't contribute much to a fire, but would melt and drip hot stuff on anybody below. Ask my AHJ, you say? Well sure, but this isn't a town where they'll know where to begin with this.