Well done indeed to all involved. An extreme operation and much will have been learnt.
In the preceding photo of shiny DC-3 with turbine engines, and bemused King/Emperor penguins looking on, I was reminded of an old adage by the sceptics,
"if God had meant us to fly we've have wings."
In Antarctica, guess what, evolution decided that, for large creatures, flying down there was not the smartest idea. One characteristic of humans is we don't lie down and say we can't; we find a way to overcome and succeed.
Congratulations on mission accomplished.