If it protects from knife attacks, I may need to borrow this the next time I work an ambulance shift in El Centro, CA. It was starting to get violent there on Sunday morning  because the union workers on strike didn't want us in their city running their ems calls. 1) I hate when unions get involved in matters that shouldn't concern them. 2) I won't stand for violence against me or my co-workers, even if it is from other emergency care workers.