Some do.
No
Anywhere in the US
No. Most correctional officers do not carry firearms.
(in the US) Law Enforcement officers have always been armed.
Yes, Japanese police are armed.
British police officers normally don't carry guns unless they need to respond to a gun-related incident.
More carry real guns. Basically all police officers carry guns. Not every officer carries a stun gun. For instance, the city where I live, which is a large city, does not issue stun guns, and neither does the county.
Only if they have a permit or if they are commissioned officers of some kind. Most are not officers, but private businessmen.
If you mean federal agents such as FBI or CIA, yes, most active agents carry guns.
Yes, police officers typically carry firearms as part of their duty to maintain public safety and enforce the law.
No. A Federal Firearms License is a licence to engage in the business of selling guns, or to collect guns, or make guns, or import guns, or make ammunition, etc. It has no bearing on CARRYING a gun, which is regulated by STATE law. There is no FEDERAL law on carrying of firearms, except certain Federal property prohibits carry, and that a law enforcement officer may carry in any state. If someone tells you that have a Federal Concealed Carry permit, they are lying.