Use stream of consciousness to answer the following. United States Air Force Security Forces is the force protection and military police of the United States Air Force. Security Forces (SF) were formerly known as Military Police (MP), Air Police (AP), and Security Police (SP).

Answer this question based on the passage: what is security forces in the air force?

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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This is the relevant information: United States Air Force Security Forces is the force protection and military police of the United States Air Force. Final answer: the force protection and military police of the United States Air Force.