21 / 5 SYSTEM
In In 2005, after hearing about the Baseline Serial Killer in the Phoenix area, Marilyn Parker began researching the epidemic of violent assaults and abductions against women and children. Marilyn knew that something had to be done to stop these predators from abducting and assaulting women and children, she knew that this system had to be something that would be powerful enough to stop a predator from abducting and / or assaulting women and children.
After years of extensive research and system building, Marilyn founded International Defensive Training Systems and has formulated the 21 / 5 Anti - Abduction & Assault System, 21 core techniques in 5 days. This system is the most powerful and effective self defense system in the world.