1976 a chap in the colonies left the military and joined Bristow. Sent to UK to get ATPL(H) and instructors rating. Upon returning to country promptly resigned and joined airline, because the opportunity had suddenly arisen, ending employment when the airline went bust as a 767 Captain. Talking to Shell aviation adviser about the morality of the jump from Bristow to airline, given what Bristow had invested in him, the reply was "good on him". It screwed the opportunity for further colonists being given advancement, all instructors then coming from the UK. Seems loyalty doesn't exist on either side of the fence if you take the story at face value. Known all the personalities involved a long time.