Updated

The Air Force has removed the commander of a nuclear weapons unit at a Montana base following a failed safety and security inspection.

Military leaders say the decision to relieve Col. David Lynch of command at Malmstrom Air Force Base stems from a loss of confidence. They say it is not the result of the failed inspection first reported by The Associated Press on Aug. 13.

This is the second time in recent months that an Air Force nuclear commander was replaced following a high-profile security misstep.

Lt. Col. Randy Olson was relieved of duty at Minot Air Force Base, N.D., in June.

The AP first reported an unprecedented sidelining of 17 launch officers there in May following an exceptionally poor review in the spring.