From the Crayj military knives collection :
MAD DOG model YFA1 031
*The YFA knife was made to the specs of Louis Awerbuck, senior instructor and
owner of the Yavapai Firearms Academy. Louis wanted a stout but compact knife to use at the range for cutting cardboard, prying open ammo crates, and cutting steel bands off crates.
He defined the size and tip geometry. There was a total of 35 of these knives made.
*Per Kevin McClung, 03/27/2005 and 08/30/2003, Tactical Forums