Just to add my two cents regarding catastrophic wounds that have been mentioned that may require quick clot or a tourniquet. Someone already mentioned that quick clot is out and pretty much never used, I agree. Tourniquets on the other hand have a place in my kit, I carry the CAT purely as I go off on my own a lot where there may be no phone signal or no one around to help. Arterial bleeding will most likely send you into shock rather quickly and blood loss is obviously rapid. If using a tourniquet of any type, even an improvised one, do not apply at the groin for femoral artery damage, apply tourniquet directly above wound and seek help, same goes for arm wounds. Lots of people like to take a gransfors out and use for chopping, even experienced foresters have had a bad axe bounce and taken half their (or someone elses) leg off. I'm not telling everyone to go out and buy a CAT, its personal choice should the worst happen, better to keep your blood in rather than out.