Operators
- United States
- United States Air Force
- 305th Bombardment Wing, Bunker Hill (later Grissom AFB), Indiana (1961-1970)
- 43d Bombardment Wing, Carswell AFB, Texas (1960-1964); Little Rock AFB, Arkansas, (1964-1970).
- 3958th Operational Test Evaluation Group, Carswell AFB, Texas (1958-1960).
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