I believe the UH and the AH-1 both got a new breath of life breathed into them with the recent upgrade programs. I think it was called either the Y or X upgrade which gave them a new 4-blade main rotor, stronger engines and improved avionics as well as targeting systems as well as some other things. I'm not a pilot and dont pretend to know the official terms but, I am glad to see this. I always enjoyed working with USMC CAS platforms.