ChainsawAsh said:I always thought it was an Ugnaught, and the Ugnaught's "Who are you?" alerted a nearby stormtrooper, who shot Threepio.
Hey, that's an interesting thought. You never know. It may be stated definitely somewhere (book, interview, whatever) who/what was supposed to have said that line. Or maybe someone could give Kershner or Kurtz a call? ;)