Both Terminators entered the mental hospital to save/kill Sarah Connor, revealing to her that the T-800 was there to help save her (with the familiar words: "Come with me if you want to live"); after their successful escape, they fled southward to Mexico in a stolen station wagon, and Sarah learned that Miles Dyson was "directly responsible" for building SkyNet after inventing a revolutionary new
microprocessor - he was the "director of special projects at Cyberdyne Systems Corporation" - and when "human decisions are removed from strategic defense" - SkyNet became "self-aware" by late August 1997 and it was too late to disarm the system; in retaliation against being unplugged, SkyNet launched missiles against Russian targets, causing the nuclear holocaust; [the microchip that Miles was designing at Cyberdyne was based upon the salvaged CPU from the original T-800 - "it didn't work, but it gave us ideas, took us in new directions"].