Here’s a pretty good short article on the subject, in line with all of the TCCC training I have seen recently. This sort of know-how is useful in more than just a “tactical” scenario. I have been to a number of motor vehicle accidents over the years where a limb has been traumatically amputated. Just one more scenario where this could prove useful.
Five Myths About Tourniquets (from www.TraumaMonkeys.com)