"This is a long exposure. The shutter was open for 31 seconds while the camera was on a tripod. The couple had to stand very still while my assistant stood behind them with steel wool on a rope. I opened the shutter, we lit the steel wool on fire with a 9 volt battery and swung the flaming steel wool in a circle, throwing sparks everywhere. Then I used an off-camera flash to illuminate them from the front and side, then closed the shutter," the photographer explains.