Musician and gun rights activist Ted Nugent addresses a seminar Sunday at the National Rifle Association's 140th convention in Pittsburgh.

PITTSBURGH — Former Defense Secretary Donald Rumsfeld says he believes there have been a “dangerous” number of personnel changes among U.S. intelligence leaders and directors in Afghanistan.

Rumsfeld, in Pittsburgh for the annual meeting of the National Rifle Association, said even competent leaders need time to develop relationships or to identify and correct mistakes.

He told a Pittsburgh newspaper on Saturday that recent tenures at the CIA and in Afghanistan have lasted less than two years on average.

“”If you ran a company like that, you’d go broke,” Rumsfeld told the paper in an interview at the Westin Convention Center hotel. You can’t do that. It’s dangerous. It seems to me that we have to recognize that these are important jobs, they’re tough jobs, and people have to be in them long enough to gain some traction.”

Rumsfeld’s comments came a few days after President Obama announced that he wants Gen. David Petraeus, commander of U.S. forces in Afghanistan since July, to step down so that he can head the Central Intelligence Agency.

Retired Gen. Michael Hayden, former director of the CIA and the National Security Agency, agreed that frequent turnovers are a concern.

“That is a lot of turbulence in the intelligence community,” Hayden told the paper by phone.

Rumsfeld also said NATO forces do not need troops on the ground in Libya but should have a clear mission on the future of leader Moammar Gadhafi.

“It’s not going very well,” Rumsfeld said. “When people on the ground wonder if Gadhafi is going to be there when it is over, that is about the least helpful thing one can do.”