After WWII, Soviet forces blocked food deliveries to parts of West Berlin, Germany in an attempt to starve them and cause the Allied governments to bend to their will. Instead, US and UK forces started air drops of food and supplies into West Berlin neighborhoods to help the people there. One pilot was especially keen on helping the kids. He became known as Uncle Wiggly Wings. He got his nickname because he would wiggle the airplane to signal the children that it was his plane. They then knew that an air drop of candy bars, each with their own parachute, would soon be falling from the plane. Why would it be useful to put parachutes on each candy bar being dropped from the plane?