Carter Hargrave is the founder and Grandmaster of American Combat Kempo Karate.
This Kempo style is made up of heavily combat modified techniques from Okinawan Karate, Aiki Jutsu Ju Jitsu, and Kobujutsu (Weapons of all sorts).
Hargrave developed this non sport program for self defensive purposes against larger and stronger attackers.
In 2000 the United States Marines used his methods as the basis for their training program.