Caliber 3 was established in 2007 by Colonel Sharon Gat of the Israel Defense Forces (IDF), and has since become the leading Counter Terror, Defense & Security Training Academy in Israel and the world.

Today, Caliber 3 is run by active military service members of the IDF, and offers education and training in Security & Defense Solutions; High-Threat Protection; Intelligence Operations; and Military Tactics, to a wide range of clients, ranging from armies to tourists. Programs are customized to the unique requirements of each group, and are continuously updated to reflect evolving security threats.