One of the things the Sikhs commemorate by wearing a kirpan is the memory of a Sikh master who gave his life indefense of his neighbors, who were not Sikhs. When I knew some of them, their primary ashram was in Espanola, NM. They also trained in the use of firearms with professional instructors. One Sikh knifemaker whose name will be recognised is Jot Singh Khalsa.