00:00They pack dirt and cork into a small cone on set
00:03before attaching a compressed air tank behind it.
00:07Then a valve is opened and the air shoots the dirt forward at high speed.
00:12At the same time the lighting crew triggers a massive flash of light aimed across the street.
00:18The dirt cloud bursts outward toward the camera
00:21and once they add in the bright flash it ends up looking like a real explosion.
