I was responsible for the composite of this shot. Foreground talent was filmed against a blue backing but there was also a large set piece with thin light strips that traveled the length of the bottom of the frame. Lots of paint out around their lower edges to remove that set piece. Set is otherwise a full CG set extension consisting of the overall environment, the large water gate in the background, the Hawk Cruiser in front of the gate, and the various fluid sims for the pillar water falls and the ground puddles.