Knife Tactical Response DVD by Bram Frank
This is a very good instructional video on using the knife mostly in the middle range. There are however quite a few good knife videos available. What is worth purchasing here is the detail Frank goes into about HOW NOT TO CUT YOURSELF!
Video and sound are very good and mercifully when Frank is talking about how to do something he's also showing it. Thank you! Some great instructors either talk or show, but don't combine.