Tiera Calvin, Sales Manager

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Tiera Calvin

Tiera Calvin is Dr. Tim Calvin's daughter and our newly appointed Office Manager. Tiera has worked at Split Second Response for the past 6 years as an Assistant Instructor, Instructor, Receptionist, Program Director, and Office Manager. Tiera graduated from Liberty High School in 2023 and is attending the New York Institute of Art and Design, majoring in Interior Design. Dr. Calvin began training Tiera in martial arts in 2008. Tiera is a 3rd Degree Black Belt in Conditioned Combat Response System, a 1st Degree Black Belt in Kajukenbo, and an ASP Be Your Own Defender (BYOD) Chemical Agent Instructor. Tiera is also the Assistant Captain of our Demonstration Team and has performed in numerous demos for the Golden State Warriors, Sacramento Kings, Discovery Kingdom, and Great America.

Join Us Here In Oakley Today For The Best Martial Arts Training In Town!

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Michael Kenner

I guarantee you will want to come back every day for training after attending once. The instructors are great, personable and professional. They even provide Self Defense classes and Firearms training courses.

Andrew D

Great, friendly, and flexible staff. Master Tim and his family are awesome people and everyone I've met there have been nothing but kind. I would recommend this martial arts studio to anyone, especially beginners. I wish I had joined sooner.

James Nelson

This is a great place for the whole family. All of my children and some of my grand-children have trained with this academy over the years. The instruction and wisdom that has been given is priceless!!! They treat you as family because you are.

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By providing your number you consent to receive marketing/promotional/notification messages from Split Second Response. Opt-out anytime by replying STOP. Msg & Data rates may apply.