'Tis a strange question and it would be helpful to know the basis of your enquiry.
If you want to join the RAF in some medical - or any capacity - start with the careers office. If you're writing a book, then advertise through the military aviation press, even RAF News if that desperate!!
If you want a general talk you could always write to one of the aero med/RAuxAF squadrons and ask your questions - you might even get an invitation to visit if you are seen to be genuine in what you seek.
Please don't insult them if all you want is blood and guts stuff or some other sort of thrill.
However, tell some more and pruners can then give you a sensible and more reasoned response.
Old Duffer