Complex sentence: There is an earthquake and the ground starts cracking open, as they are about to fall to their death, they see a Humvee pulling up, they run towards the Humvee and see Ringer driving.
Split into simpler sentences: There is an earthquake and the ground starts cracking open, and as they are about to fall to their death, they see a Humvee pulling up. They run towards the Humvee and see Ringer driving.