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Secretary of Defense Robert Gates said senior U.S. Air Force personnel are accountable for mishandling of the nuclear arsenal.

WASHINGTON — Defense Secretary Robert Gates ousted the Air Force's top military and civilian leaders Thursday, holding them to account in a historic Pentagon shake-up after embarrassing nuclear mix-ups, one of which involved Utah's Hill Air Force Base.

Gates announced at a news conference that he had accepted the resignations of Air Force Chief of Staff Gen. Michael Moseley and Air Force Secretary Michael Wynne — a highly unusual double firing.

Gates said his decision was based mainly on the damning conclusions of an internal report on the mistaken shipment to Taiwan of four Air Force electrical fuses for ballistic missile warheads. And he linked the underlying causes of that slip-up to another startling incident: the flight last August of a B-52 bomber that was mistakenly armed with six nuclear-tipped cruise missiles.

The four electrical fuses that wound up in Taiwan were from Hill Air Force Base.

The report drew the stunning conclusion that the Air Force's nuclear standards have been in a long decline, a "problem that has been identified but not effectively addressed for over a decade."

Gates said an internal investigation found a common theme in the B-52 and Taiwan incidents: "a decline in the Air Force's nuclear mission focus and performance" and a failure by Air Force leaders to respond effectively.

In a reflection of his concern about the state of nuclear security, Gates said he had asked a former defense secretary, James Schlesinger, to lead a task force that will recommend ways to ensure that the highest levels of accountability and control are maintained in Air Force handling of nuclear weapons.

In somber tones, Gates told reporters his decision to remove Wynne and Moseley was based on the findings of an investigation of the Taiwan debacle by Adm. Kirkland Donald. The admiral found a "lack of a critical self-assessment culture" in the Air Force nuclear program, making it unlikely that weaknesses in the way critical materials such as nuclear weapons are handled could be corrected, Gates said.

Gates said Donald concluded that many of the problems that led to the B-52 and the Taiwan sale incidents "have been known or should have been known."

The Donald report is classified; Gates provided an oral summary.

"The Taiwan incident clearly was the trigger," Gates said when asked whether Moseley and Wynne would have retained their positions in the absence of the mistaken shipment of fuses. He also said that Donald found a "lack of effective Air Force leadership oversight" of its nuclear mission.

The investigation found a declining trend in Air Force nuclear expertise — not the first time that has been raised as a problem, Gates said — and a drifting of the Air Force's focus away from its nuclear mission, which includes stewardship of the land-based missile component of the nation's nuclear arsenal, as well as missiles and bombs assigned for nuclear missions aboard B-52 and B-2 long-range bombers.

Gates also announced that "a substantial number" of Air Force general officers and colonels were identified in the Donald report as potentially subject to disciplinary measures that range from removal from command to letters of reprimand. He said he would direct the yet-to-be-named successors to Wynne and Moseley to evaluate those identified culprits and decide what disciplinary actions are warranted — "or whether they can be part of the solution" to the problems found by Donald.

White House press secretary Dana Perino said President Bush knew about the resignations but that the White House had "not played any role" in the shake-up.

Early reaction from Capitol Hill was favorable to drastic action.

"Secretary Gates' focus on accountability is essential and had been absent from the office of the secretary of defense for too long," said Sen. Carl Levin, D-Mich., chairman of the Senate Armed Services Committee. "The safety and security of America' nuclear weapons must receive the highest priority, just as it must in other countries."

Utah's congressional delegation, however, was less enthusiastic about the departures.

Sen. Orrin Hatch, R-Utah, said that the two men were "great friends" to the state and "tireless advocates" for the military. He also complimented them on their creation of "a dynamic plan for the modernization of the Air Force."

Sen. Bob Bennett, R-Utah, echoed Hatch's assessment of the men as "friends" of Utah. He thanked them for their years of service, as well.

Rep. Rob Bishop, R-Utah, in whose congressional district Hill Air Force Base is located, also called it a "loss" for the country.

"It would be hard to say that the Air Force has ever been better-served by two individuals than it has been by these two gentlemen," Bishop said in a statement. "They were committed to this country and the Air Force."

Gates said he would make recommendations to Bush shortly on a new Air Force chief of staff and civilian secretary. Gates has settled on candidates for both jobs but has not yet formally recommended them, one official said.

Gen. Duncan J. McNabb is the current Air Force vice chief of staff.

Moseley, who commanded coalition air forces during the initial invasion of Iraq in March 2003, became Air Force chief in September 2005; Wynne, a former General Dynamics executive, took office in November 2005.

Wynne is the second civilian chief of a military service to be forced out by Gates. In March 2007, the defense secretary pushed out Francis Harvey, the Army secretary, because Gates was dissatisfied with Harvey's handling of revelations of inadequate housing conditions and bureaucratic delays for troops recovering from war wounds at Walter Reed Army Medical Center.

Wynne and Moseley issued their own written statements.

"As the Air Force's senior uniformed leader, I take full responsibility for events which have hurt the Air Force's reputation or raised a question of every airman's commitment to our core values," Moseley said.

Wynne said he "read with regret" the findings of the Donald report.


Contributing: Stephen Speckman and Suzanne Struglinski, Deseret News