The scouting trip took place in September, 2015, and the actual filming began in February, 2016. Because we wanted to film the hunting eagle in action we had to travel to the Altai Mountains in the middle of winter, which is when the eagles are flown and used for hunting, according to Kazakh tradition. Carl and Meredith brought six cameras and associated equipment, including tripods, lenses, extra batteries, etc. (plus plenty of gifts for the family and assistants). When we returned in June 2016 for the summer film shoot we brought Mary, our field assistant, who was a huge help with all the equipment and filming, especially since we'd added a Phantom 4 Quadcopter.