In WW2 when the US Air Force were trying to reduce losses of their bombers, they wanted to add armor to the areas that received the most damage, but a mathematician suggested they add the armor in areas that did not receive damage, as planes shot in those areas never made it back to be analyzed.
US Air Force
William “Billy” Mitchell was an US army…
William “Billy” Mitchell was an US army general who was an outspoken proponent of air power and its ability to defeat battleships. Due to his unrelenting criticism of high command’s refusal to adapt, he was demoted and court martialed. Today he is regarded as the father of the US Air Force.
Operation Christmas Drop

Every Christmas, the US Air Force performs Operation Christmas Drop – airdropping toys and other presents to children who live on remote Pacific islands.
Every Christmas since 1952 the US Air Force has airdropped…
Every Christmas since 1952 the US Air Force has airdropped gifts over the islands of Micronesia, making it the oldest ongoing Department of Defense mission and the longest running humanitarian airlift in the world.