Should pilots carry firearms

Yes. In case of a terroristic threat on their plane, they need to be able to protect their plane and there passenger's. A typical standard police issue 9mm would be sufficient for all pilots. All pilots would need to have small firearms training so the pilot knows ow the firearm works.

Added: It is NOT a mtter of 'should' they, this question is not open to a debate. It is established law that commercial airline pilots CAN, when properly trained, carry firearms in the cockpit.