When putting your kit together, please keep in mind the ABCs of airway, breathing and circulation. In the case of the IFAK, the airway and breathing tools are going to limited in most cases to little more than a naso-pharyngeal airway inserted into the nose and into the back of the throat. The circulation aspect is going to be covered by things like tourniquets and gauze bandages, as in, keeping the blood from circulating it's way out of the body.