If you look at the last couple posts Urukhai explains in his post that the Skyranger won't be able to land until they clear the LZ. Then in Vladimir's post Nic has to rappel down but right after that in Geoffry's post the Skyranger has landed but then in Halvtand's post we have to rappel again so I am confused. Also I have played XCom since it was an MS-DOS game in 1994 when it was called UFO Defense and I've beaten XCom: Enemy Within three times good sir.
Edit: The Firaxis development team never actually worked on The Bureau: XCom Declassified, that project was tossed between other parts of the 2K Games family.