Peter Stevens was a man who worked in the Royal Air Force, which is like a group of really important people who fly in airplanes to help protect their country. He was a special kind of person in the RAF called an officer, which is like a big boss who tells other people what to do. In his job, he was responsible for making sure that all the planes and people under his command were doing their jobs the right way and helping to keep their country safe. People like Peter Stevens are very important because they help make sure that everyone in the military is working together and doing their best to protect their country.