Plenty of such stories in the past , like the French air force T33 instructor who intercepted and directed the disabled Spantax CV990 to a Cognac AFB runway after the collision with the DC9 over Nantes.
Because of the Air force embarrassment over the whole affair ( military ATC having taken over during Civil controllers strike) this guy never received due recognition, but he can rest with the fact that he helped saving 107 lives that day...
As to Greenlandair crews : Arctic flying brings the best from the Best ...Been over there a few times (as pax) . Great guys .