Boorva, one of the planet leaders at the conference, was originally costumed with huge wings on his back. But the attachments kept knocking over props and smacking the other actors in the face every time he moved, so Boorva had to be given a wing-ectomy. See more...
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Plot hole: During the entire standoff between Blake & Travis, there is a Federation guard with his hands on his head. Yet when the scene first begins, no-one else is and Blake is not holding a weapon on anyone. Neither has he revealed his play with the virus at this point. After he has done so and left, the same guard still has his hands up. Finally, after Travis has secured the virus, the guard STILL has his hands up.