FYI from BATR

The play takes place in an unnamed U.S. city. When the curtain rises we see what looks like the inside of a single story, tilt-up concrete industrial building with large vats of chemicals. The air is full of a red mist. We can see vapors rising from the vats and chemicals bubbling out and down their sides. Behind the vats, but visible to us, is a large truck-size open door with a very large and noisy fan partly in front of it that is slowly blowing the red mist out the door where it is picked up by the ocean breezes and carried over nearby homes. In the distance we can see the ocean.