Nelson Vega, who was described by friends as a charismatic 39-year-old bartender from Miramar, had left the J.P. Mulligan’s sports bar with his girlfriend. He walked her to her door, and according to the teens’ account to police, left the keys in his car with the engine running. When he came back to the car, one teen claimed Vega came at them, and so both teens fired at Vega at the same time.