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Bart: Hey, what's this?
Principal Skinner: Oh, that's my old unit from Vietnam. I was their sergeant, they were my loyal troops. (photo shows Skinner saluting and his men scowling at him) That photo was taken shortly before I was shot in the back which was very strange because it was during a Bob Hope show. I was trying to get Joey Heatherton to put on some pants, for God's sake.