He's about to rearrange some circuitry on the ring when a deafening crack behind him makes him stand upright. No machinery back there. That was the sound of someone breaking the speed of sound. His right hand goes for a screwdriver; the only weapon to hand. Hopefully if some malign speedster has broken into the lab he's completely ignored Terri and her parents.
"Whoever you are, this is a government facility. Security will be here in seconds." He slips the screwdriver into his sleeve and slowly turns around to see a man clad in tight scarlet and gold, and another dressed as one of the now defunct Green Lantern Corps.