Today is the 100th birthday of the Royal Air Force, the world’s oldest independent air force. Once upon a long ago, I served in the RAF. Why did I choose the RAF? Well, I got a bit too seasick for the Navy. And bullet dodging with the British Army wasn’t something that appealed to me. The application process was quite the balava. In between posting my application form and turning up for basic training at RAF Halton, eighteen months passed. Numerous tests, interviews and a pair of medicals filled the time. Two medicals, rather than the usual one, because I failed the first for being a couple of pounds underweight, courtesy of a ten day bout of flu.