PTK-SMF™ is The Authentic Pekiti-Tirsia Kali system of Close-Quarters Combat blade fighting.

Pekiti-Tirsia is a proven system of combat strategy and tactics that provides protection from strikes and attacks, destruction of opponents' weapons, and domination of any combat or self-defense situation, executed with techniques that attack, quarter, and neutralize single or multiple opponents.

The PTK-SMF standard is the use and mastery of the live blade with the proper range, timing, intent and energy of dynamic, continuous offensive and counter-offensive attacks.

PTK-SMF is led by Tuhon Tim Waid, the leading recognized instructor of the Pekiti-Tirsia Kali system today, and subject matter expert on military close-quarters combat, law enforcement use of force and defensive tactics, and the authentic Filipino martial arts of combat blade fighting. Tim served with distinction in the U.S. Marine Corps as an infantry platoon sergeant, as an intelligence sergeant in the U.S. Army National Guard, and instructs military units, law enforcement agencies, and private security forces worldwide in close-quarters combat, defensive tactics, and operator/officer survival. Tim has also conducted executive and personal protection operations worldwide as a certified executive protection specialist and has served as a corporate security manager with industry leaders such as Ericsson and Texas Instruments.

Glenn training in the Philippines with Tuhon Tim
Dwayne training in Texas with Tuhon Tim 
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Sei Shin Dojo teaches the art of American Jiu Jitsu Centers and the Pekiti Tirsia Kali System.

Sei Shin Dojo is located in Manhattan's East Village neighborhood in New York City.

Address: 34 Avenue A, Second Floor, New York, NY 10009