Which is the largest agency of FATA by area?

What does an active officer mean? Can a cops wait in the driveway of a bar to pull someone over? What do girl detectives wear? How do you locate an old insurance company called assured security life insurance company? To who do federal agencies report? How long does a child have to be missing before an AMBER Alert is called? Are Fire departments a proper noun? What is the National average number for a police officer per 1000 citizens? Where can I find how to become a public notary? What does life in prison mean? What do you call someone who has been disloyal in their marriage? What did crevecoeur see as the greatest strength of the US and the probable cause for its success? Where are Federal Emergency Management Agency Camps? If an unusual fluid was found around a body how would the police use it to find out who murdered the person? Who is the current police chief for Seattle? How many border patrol agents work for the US? Do FBI agents wear glasses? Is Identity Thief protection insurance necessary yes or no? Who was released in prison instead of Jesus? What happens if you get into a fight with someone and they go to the police and press charges against you?

Which is the largest agency of FATA by area?