About United Studios of Self Defense: Information about USSD, the largest martial arts organization in North America! About USSD Livermore: Learn about what we're all about at our Livermore location...   About "Kempo" and what we teach: Never heard of "Kempo" before?  That's ok, most people haven't, but yet it is one of the most commonly taught styles in the world today.  We'll give you a brief overview of what we teach, and how we teach it. Group Class Schedule: For a listing of group classes by age and ranks. Private Lesson Schedule: Full listing of all classes and available private lesson times.