66/67, before 360 had its full complement of T17s we did some one week detachments at RRE -loved their aeroplanes - immaculately clean, heated socks and gloves and at half time on an exercise/trial you came below 10,000 ft for soup and sarnies. Oh, and if rudderlocks required, no flying, civvie ground crew would not take rudder locks out with engines running. Great fun and good experience.