Duties as acting flight commander, orderly officer, member of a court of inquiry, and all sorts of other duties for which officers are specially trained. I do not yield one inch to the hon. Member in my admiration for the sergeant pilots, nor do any officers in the R.A.F.; but it is found a convenient arrangement that the sergeants should have their messes, and the officers theirs. I can assure the hon. Member that, in my honest opinion, the arrangement is as popular with the sergeants as with the officers.