For the live action Ubisoft 'Ghost Recon' trailer, everything was built from the ground up. Only a few wild tracks were shot during the shoot and everything else was either made or sourced specifically for this film. Over 300 hours were spent recording and editing foley, which included trips to Hampstead Heath, the forest and lots of running about and rolling around. The helicopters were sourced and processed, the drones were built and recording of guns were stylized to give both sides of the battle their own sound. Great care and attention was taken to the mix to ensure it felt as dynamic and filmatic as possible, reaching a crescendo in the final battle scene.