So I know this was an old topic on the old board, but I finally figured out what kind of Jacket Alan Arkin is wearing as Yossarian. For much of the movie the contrast is too high to get a sense of what it could be, but then, in the part right before Snowden reveals his secret, you see the angled corners on the front pockets. I was just watching it and happened to catch this, but its either a Bronco or a United jacket. I doubt youll be able to see the shoulder seam and tell. But hey, mystery solved!