Well, that's a first...

[Black Aeronaut]

Yeah, theater projectors require some serious light and use some of the most powerful lamps in the world - so powerful they usually require two dedicated vents to the outside to keep everything from burning up: one for the lightbox and the other for the projection assembly. They're also pretty good about keeping fire extinguishers close at hand because film burns up pretty easily. They probably had a small projector fire but the projectionist got to it fairly quickly - enough that the damage was limited to the projector alone, and all heat and smoke was drawn out through the vents.