Complex sentence: The 40 Skeets scan an area of by using infrared and laser sensors until it finds a target, or failing that, self-destructs 50 feet (15 m) above the ground.
Split into simpler sentences: The 40 Skeets scan an area of by using infrared and laser sensors until it finds a target. If it fails to find a target itself-destructs 50 feet (15 m) above the ground.