When launching a kick or punch, martial artists frequently produce a spectacular and scary cry. The martial arts yell is known as a kihap gihab in Taekwondo (sometimes spelled kihup, kiai, or kyup). The word "Taekwondo" is Korean for "the way of the foot," and it was coined by Syngman Rhee, who established the art in the United States in the 1950s. Today, there are over 7,000 teachers worldwide who have been trained by these masters. The Taekwondo yell is used to alert opponents of an attack and to get their attention. It can be used as a distraction or to give teammates a warning of an incoming strike. There are several different cries used in Taekwondo depending on the situation at hand. For example, when throwing a front kick, the fighter will usually say "ah!" or "ooh!" after hitting with the heel of his/her foot. This indicates that he/she is feeling out the target with the ball of the foot and wants to know if it is safe to continue with the technique. If not, then he/she should change feet immediately or finish the move successfully otherwise he/she will lose momentum and power. When throwing a back kick, the fighter says "ho!" or "ha!" instead.