There is significant "lost" script content that was written but never made it into the final game:
This setup is crucial. The script lulls the player into the role of the savior. The language is that of a rescue operative. But the cracks begin to show immediately as Walker ignores direct orders to turn back. His first act of defiance— "Fuck the radio, we're going in" —is the first step on the script’s slippery slope toward damnation. spec ops the line script