I don't know if this has been covered but....25 years in the field as a paramedic (NYC and Florida). I have never used or seen a torniquet used. Personal opinion.....not needed. Direct pressure (pressure dressing-ie. ace bandage) has been enough for everything I encountered including traumatic amputations. Never needed more.....that includes arterial bleeds. Doesn't mean I forget it....I've just never needed them. FWIW.