megan #1068: Why did First Officer Cassin say it was clear to the right? Because he thought it was. He was wrong, It wasn't clear to the right - refer Mt Bird.
megan #1072: Captain Collins and F/O Lucas went to the Christchurch end of Operation Deep Freeze, not the McMurdo end.
If "you have to see it to fully understand", what difference would it have made to have covered the issue in the briefing? The point is that despite it not being covered in the briefing, the captain knew of the problem. hence the locking of the aircraft back onto the nav track. Did any of the other VMC pilots do that? Not one. They were comfortable relying on their eyes. Captain Collins was not, because it was "very difficult to tell the difference between the cloud and the ice."