submarines had been tethered to anchors on the ocean floor. There were over one million tons of battle-weary steel floating on the ocean without a single human on board. Instead, thousands of pigs, sheep, and rats had been set out in the South Pacific sunshine, in cages or in leg irons, and they would face the coming atomic blast. Some of the animals had metal tags around their necks; others had Geiger counters clipped to their ears. The Navy wanted to determine how living things fared against nuclear bombs.

