The straight, or linear, kick is a long range combative which can be very effective in preempting an impending attack. Watch Israeli Krav Maga's US Chief Instructor David Kahn demonstrate and teach this method to thwart an aggressor before he attacks.
Train this Israeli Krav Maga technique and more at Wolverine Self Defense in Colorado Springs, so that you may learn and master the self defense tools within you. So that you may walk in peace.
Stay safe out there.