North American Rescue C-A-T Tourniquet (Gen-7)DESCRIPTION One of only two tactical tourniquets authorized for purchase by the US Army, and the go to tourniquet for any first aid kit, the C A T tourniquet by North American Rescue is the only tourniquet that we use for our Bleeding Control Kits, as it's very easy to use, lightweight, and extremely effective. Advantages of the C A T Tourniquet: Proven to be 100% effective in occluding blood flow in both upper & lower extremities by the U. S. Army.