As the wired Helicopter A42 model could not easily be filmed right side up due to its spinning blades, it was upended and flown on wires attached to its underside; the footage was then horizontally flipped in post-production. The scene of Blue shooting Scarlet includes a reaction shot that required the brief appearance of a "grimacing" Scarlet head, which was sculpted especially for this episode.
The Helicopter A42 model's spinning blades made it hard to film right side up, so it was turned upside down and flown on wires attached to its underside; the footage was then flipped horizontally in post-production. The scene of Blue shooting Scarlet includes a reaction shot that required a brief appearance of a "grimacing" Scarlet head, which was created especially for this episode.