Template:Ranks and Insignia of NATO Air Forces/WO/United States (1956-1991)
| NATO rank | WO-5 | WO-4 | WO-3 | WO-2 | WO-1 | |||||
|---|---|---|---|---|---|---|---|---|---|---|
 United States Air Force(1956–1991) |
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| Chief warrant officer 4 | Chief warrant officer 3 | Chief warrant officer 2 | Warrant officer 1 | |||||||