A 70-year-old store owner fended off a knife-wielding robber by brandishing his own store’s defense system – a really big machete. Naif Qatamin, the store owner, and his wife run Selena One Market in Tacoma. The business has been robbed before, with Qatamin using a stick for protection. A year ago, he upgraded to a machete, slotted right next to the register.