DD: We looked at a lot of peregrine falcons, considering that they are some of the fastest birds out there. When Falcon's diving to the helicarriers, he could fly fast enough that he could get past the artillery that was shooting at him. So when he goes into a stoop and brings the wings back next to his body, that was definitely taken from a peregrine falcon. We also wanted you to feel the flex of the wings. We wanted them to feel like a plane that could catch air and he could steer with his arms and use his body to control how he flies. You'll see he uses his body to turn, so he'll bring one of his legs forward, and bends the knee so that feels a little more like he's creating drag.