The US Air Force has relieved several officers of their commands after a B-52 bomber was mistakenly flown across the US loaded with nuclear-armed missiles.
Three colonels, a lieutenant colonel and 66 other personnel were punished following the incident at Minot Air Force Base, North Dakota, on 29 August.
Maj Gen Richard Newton said ground crews had failed to follow procedures.
The incident has been described as one of the worst known breaches of nuclear weapons procedures in decades.
Six cruise missiles armed with nuclear warheads were mounted on the bomber's wings before it was flown to Louisiana.
The missiles were supposed to have been taken to Barksdale Air Force Base, but the warheads should have been removed beforehand.