This video is loaded with lots of fascinating techniques of high stakes disguise. There’s light disguise, which uses glasses, caps, and facial hair, to hide in a crowd, says Jonna Mendez, the CIA’s former Chief of Disguise. And there’s advanced disguise, which is used to hide your identity in face-to-face encounters. And good disguise is more than just makeup and prostheses. It’s about behavior, too. For instance, an American posing as a European can give themselves away by holding a cigarette the wrong way, resting while standing on one leg, or holding a fork in their right hand.