“That’s the auxiliary resonance generator,” the masked man said calmly. “It’s currently set to 4.2 hertz. At 7 hertz, the human eyeball begins to vibrate in its socket. At 9 hertz, the optic nerve detaches. We can go higher.”
The bound engineer shook his head. “I don’t know what you’re talking about. ProFace never made prototypes for wingp—”
The man with the tablet looked down at it, then back at Marta. “What did you just do?”