http://youtu.be/HsJUqNdHTho
Instructor Zero呢個名係佢既代號，係Spartan360入面個個都有number

佢既Facebook Page
https://www.facebook.com/InstructorZero

José N. Harris — 'Amateurs train until they get it right. Professionals train until they cannot get it wrong.'

同場加映 Magpul Dynamics 宣傳片
http://youtu.be/ZTr8xvkUWp4
http://youtu.be/1XCv0X6SqUg
Art of http://youtu.be/LJQTpTljLz8