Ever find yourself in trouble? Today’s fresh apps turn your phone into a self-defense training guide or an emergency tool.

Learn from the toughest how to do the fight part of the “Flight or Fight Response” in a dangerous situation. Find a hyperlinked table of contents, helpful diagrams, and step-by-step instructions from a military how-to manual. Useful for hand-to-hand combat, disarming people, and the ever-so-ugly knife fight.