RATED 14+. A tornado rips into a factory; barrels of turpentine explode in flames; one of the fastest boats in the world crashes upside down; a helicopter pilot makes the mistake of his life; a world-famous daredevil comes up dangerously short.

RATED 14+. The ultimate snowmobile stunt goes horribly wrong; a toxic cloud threatens thousands in a major American city; a 100-ton train slams into a bus; a drag boat racer ejects at 165 miles an hour; a skydiver cartwheels out of control.

RATED 14+. A tornado rips into a factory; barrels of turpentine explode in flames; one of the fastest boats in the world crashes upside down; a helicopter pilot makes the mistake of his life; a world-famous daredevil comes up dangerously short.

RATED 14+. The ultimate snowmobile stunt goes horribly wrong; a toxic cloud threatens thousands in a major American city; a 100-ton train slams into a bus; a drag boat racer ejects at 165 miles an hour; a skydiver cartwheels out of control.

RATED 14+. A fire spews blazing metal shrapnel over Dallas; a man lifts a 4,000-pound helicopter to free a trapped pilot; a daredevil survives a motorcycle crash at more than 200 mph; an explosion that propels a car half a mile; a typhoon in Japan.