The tacticool sunglasses ads taught me that I was putting sunglasses on my face wrong all these years.
He only completed Phase One of Installation, Sunglasses, Tactical.
Phase Two is to take the index finger of the unoccupied hand (presumably the one not carrying a weapon) and press the Sunglasses, Tactical, on the bridge, aligning them closer to the face.
Phase Three is to then perform a very subtle down and up nod of the head for confirmation that the Sunglasses, Tactical drill was performed properly.
I feel like such a dweeb or REMF for not doing this properly all these years.