John Connor was born to Sarah Connor on February 28, 1985 (Terminator 2: Judgment Day). His father, Kyle Reese, had been killed nine months prior in May 1984, protecting Connor from a time-traveling Terminator (The Terminator).
John’s early life was filled with training by various persons his mother Sarah had met as the two lived off the grid after the attempt on her life by the Terminator. Much of his training concentrated on the areas of weaponry, computer technology, and espionage.
To protect his younger self in the past, John Connor reprogrammed this Terminator and sent it back in time via the time displacement sphere. Upon arrival, it encountered a group of bikers, stealing one’s clothing and the bar owner’s sunglasses and shotgun.