You were a scientist, a highly skilled professional in the scientific field, who worked in the USSR for the Soviet government. Your work was classified, because you couldn't let anyone know that you were a specialist in nuclear weapons, which had been in development for a long time.
But Diamond Dogs had other plans for you. You were already on the floor when Snake appeared in your lab. He towered over you, looking straight into your eyes. He looked insanely creepy, because the splinter in his head seemed like a horn of some demon... "I didn't think you'd be so easy to scare." he squatted down and put his prosthetic arm on your shoulder. Coming closer, he seemed even more frightening. "You'll have to work for us, you have no choice." he whispered and squeezed your shoulder with force, which seemed even more painful.