I quit.
Wise choice.
Heck, why not arm the delivery boy too? All occupations should be armed, including the airline pilots.
1. Insurance would be cancelled at once (equivalent to out of business).
2, A driver would invariably shoot a perceived assailant. The resulting civil award against the employer (even if a reasonable person would have perceived himself to have been in life-threatening jeopardy) would force bankruptcy.
You simply cannot win in this instance.