The Covenant wouldn't make the same mistake twice, they would know the potential danger of the S.O.F. So I have come up with two theories.
1. The S.O.F either bluffed with nuclear mines, or really did put nukes around themselves to stop the Covies from reaching them.
2. Do we know that S.O.F is in space? Perhaps it crash landed and the Covies couldn't find it. That might explain why there was a destroyed ship on an arctic plane in the beginning of the demo. Also, the supply pads would receive supplies normally even if S.O.F was on the ground. It's still pelicans going to there base to drop off supplies.
Just two potential theories. Post your thoughts.
