Then I take the ball of flames and closely have it overlap the rear of the racecraft - around the area where I created all the exploding fragments of the craft. In addition I've placed several gray-colored cloud primitves (not shown in the image) around the big explosion , which probably wasn't necessary, but I figured you can't have fire without smoke :) Now to light up the whole thing. Since I'm working in Ray Dream minus the Anything Glows extension, I have to manually add in a couple of lights for the explosion. I've used only 3 large bulb lights - each with 90% brightness, range of 50 inches and a Distance Fall Off of 100% - these bulbs were placed within the explosion cloud and the cast shadows option is turned off . A sun light from the Four Elements: Wind extension was used to light up the rest of the scene.