In the movie Star Wars: A New Hope, Han Solo in the Millennium Falcon decides to shoot one of the Darth Vader's wing man TIE fighters instead of shooting Darth Vader's TIE fighter. Is there a Star Wars canon explanation for this?
It seems to me that the most logical thing for Han Solo to do at that moment would have been to shoot the lead TIE fighter that is about to shoot at Luke's X-Wing fighter.