Old topic I know, but great info. Just a couple of little things I wanted to add. First, tourniquets are "in" as far as trauma medicine goes right now-in a big way. The professionals from the sand box are telling us that up to 4 hours a limb is still viable with tourniquet applied, many saved outside the 4 hours but your good until that point. If you are going to carry one, get one, a real one, don't improvise, this is life saving equipment. There is a reason engineered tourniquets aren't tie down straps. Enough on that. Next as far as the angiocaths, if you feel you have the knowledge, skills and the balls to perform a needle decompression, than carry the equipment, however a 16 guage as pictured above won't cut it. You need to have a 14 guage that is at least 2 inches long, and carry more than one if it is 2 inches because you will need to do it again, 2 inches is barely enough to get into the pleural space and once you remove the needle so the chest can vent through the catheter any movement of the patient and you will have lost it. Ideally carry a 3 1/2 inch, that will stay in place, but you have to look around they are hard to find. Doing a needle decompression is about a 4 minute procedure. It really only takes less than a minute to do, however it takes 3 minutes to work up the balls to shove that big of a needle into someones chest in public!