Extremely graphic series:
http://imgur.com/a/9MPLT
http://imgur.com/a/IuEDd
One thing these photos show us is that security and medical staff on duty at events are worthless if something goes down. They are just standing around. It is the regular people in the crowd that are applying tourniquets. In the first link the guy is applying a tourniquet before the smoke even clears. The woman in the blue shirt just lays there bleeding out (she died) while the nurse stands over her doing nothing. Then there is the guy with the cowboy hat that jumped in and helped out and put a tourniquet on also.