Air Police identification badge
The United States Air Force Air Police was a branch of the United States Air Force responsible for defending airbases and facilities.
In 1969, Lieutenant Colonel Fellini, a staff sergeant and two airmen served in the Air Police at the US 498th Airbase Group. (TOS: "Tomorrow is Yesterday")
In reality, the Air Police had been renamed "United States Air Force Security Police" in 1966, three years prior to the supposed timeframe of the episode.
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