Explanation:
What event? The question is meaningless with no context.
To help discourage Soviet communist expansion, the United States built more atomic weaponry, The arms race has produced waste from such sources as the reactors that make the plutonium and tritium, the tailings from uranium mining, and other by-products from the nuclear weapons development process. As more nuclear weapons are removed, the safe storage of their warheads becomes increasingly more urgent
Since U.S sent one of their ships on British waters but German submarines detonated the American ship carrying innocent passengers.
The answer is search and destroy
