Three hundred meters is neither far nor near.
The "special" in special operations is mainly reflected in this closeness: most, mind you, most, not all, special operations aim to close the distance, using close-quarters combat to increase the likelihood of mission success.
Only an expert dares to shoot an enemy point-blank in the forehead — and more crucially, only an expert gets the chance to do so.
Whether Gao Yuan is an expert is up for debate, but he could do what those special forces experts could not.
Others rely on technique, Gao Yuan relies on speed.
Carrying a machine gun and sprinting, Gao Yuan wasn't spotted by the enemy until he was less than fifty meters away — and by the time the enemy reacted, he was already upon them.
