The Fourth of July was this past week, which for me always means watching the movie Independence Day.
In the final act of that movie, the US puts together a long-shot plan to beat the aliens, who had been absolutely and literally destroying them the entire movie. They would fly up into space with a recovered spaceship, upload a virus to the mothership, and that would allow them a small window of time to beat the aliens on earth. Even with that small window of time, it took a precise shot at the right moment to bring down the alien ship.