The general in charge of the US Air Force's long-range nuclear missiles has been sacked due to "loss of trust and confidence", officials have said.
The Air Force said Maj Gen Michael Carey's removal was for "behaviour during a temporary duty assignment". The sacking was not linked to the operation of the nuclear arsenal, which was safe, the officials insisted.
On Wednesday the US Navy announced an admiral overseeing nuclear weapons forces had been sacked from the role.
That was due to illegal gambling activities, officials said.
Michael Carey is a two-star general in the 20th Air Force and was responsible for maintaining intercontinental ballistic missiles (ICBMs) at three bases across the US - a total of 450 missiles.