The three ladies were all confused when Charlie mentioned helicopters.

Helicopters? All they heard was the rustle of the Antarctic wind and nothing else.

Furthermore, when they arrived at the research station and met with the Norway research crew, they specifically mentioned that helicopters are rarely used during the Antarctic winter. Unless there was an emergency, there was absolutely no chance of seeing one flying around, since the slightest mishap could cause a fatal crash.

But it was Cha