The Giant by Bradley

This story is about a very badly treated creature (a giant) who happens to have powers to either zap themselves up into the clouds or down into the ground and if you are a giant not powerful enough you could get stuck in the ground or sky! The next morning, the giant came across the Royal Air Force trying to bomb him and possibly capture him... What he then decided to do was grab a huge nail - that giants happen to have and accidentally zaps himself into the ground but unfortunately for him he was not as powerful as the others...