Ryusuke Tsuchie:
Over 9 years of Japanese military Service, 5 of which in SOF units.
Speciality areas are CQB tactics, maritime & inland security, threat assessment, VIP close protection & marksmanship.
Ryu has 17 years of experience in martial arts, and holds multiple black belts in Aikido, Karate, Nihon-Kenpo, Judo and Russian Systema, in which he also serves as a non-civilian training coordinator and representative in Japan.
https://www.spikeyhand.com/wp-content/uploads/2013/11/maddog-150x150.jpg

なんて訳すんだ？