During the trench runs by Gold Squardon on the Death Star, one of the Gold Squadron groups begins their attack run and is attacked by Darth Vader and his TIE-fighter group.
However, the Rebel pilots realized this before it happens:
Pilot A: The guns... they've stopped...
Pilot B: Stabilize your rear deflectors. Watch for enemy fighters.
Since we only see Red Squadron report in, I am not sure which Gold Squadron pilot this is. A bit earlier in the run we here Gold Leader (I think):
Gold Leader: How many guns do you think Gold Five?
Gold Five: Say about twenty guns. Some on the surface, some on the tower.
However, during Gold Five's line the scene switches back to the Rebel base and we only hear him through the comm system.
To me Pilot B and Gold Five sound the same... can we confirm that it was Gold Five who was smart enough to realize that they needed to "stabilize the rear deflectors"?
The first quote is at about 6:35 while the second quote is at 6:15 in the video below.