tom swift among the diamond makers

 people in London from world war two would always know when to run. why because they would hear the engines of the v-1 rockets these rockets would rush to the courses where unmanned computers run them. and told them where to go but then a while after that they would get nothing before an explosion happened. they wouldn't hear the engines why because they had a new type of rocket the v-2 rockets. these rockets were so fast they were faster than the speed of sound. these rockets would first climb to the highest hemisphere. they could get to without going into space then they would drop friendly fast using gravity for itself. shooting down at hundreds of miles an hour faster than the speed of sound.