Some 3,500 women in Iran have registered as official ninjas-in-training, according to a recent video report by state-run Press TV. In the more than six-minute video, filmed at the Iran Ninjutsu Club in the “heart of Iran,” the female warriors are shown practicing stances of attack, stealth methods, defensive gymnastics, wielding bows and swords, and making a whole lot of “huaaaah” noises.