First time I heard a squadron CO being called 'Boss' was in Oct' 68, when with a pilot colleague from 48 Sqn ( Hercs' ) I attended the Tengah Open Day. We were in the 74 Sqn crew room when the CO walked in having just flown the solo Lightning display. 'Great display Boss' shouted Fg Off Dave Roome amongst others. Blimey I thought - our Sqn Cdrs in the transport world are called Sir. I can't recall ever hearing the Boss word used on the Herc' fleet until the time I left at the end of '73.