In 1976, Armenian Olympic swimmer Shavarsh Karapetyan had just finished a grueling 12-mile run with his brother when disaster struck. A crowded trolleybus veered off a dam and plunged into a reservoir—80 feet from shore, 33 feet down. Without hesitation, Shavarsh dove into the icy, murky water. Fighting near-zero visibility, he kicked through the rear window—shattering the glass and slicing himself badly—then swam inside. One by one, he dragged passengers to the surface, surfacing only long enou