Air Force says latest missteps don't equate to failure; others cite worrying pattern

This photo taken Jan. 9, 2014 shows a mockup of a Minuteman 3 nuclear missile used for training by missile maintenance crews at F. E. Warren Air Force Base, Wyo. As disclosures of disturbing behavior by nuclear missile officers mount, to now include alleged drug use and exam cheating, Air Force leaders insist the trouble is episodic, correctable and not cause for public worry. The question persists, nonetheless: At what point do breakdowns in discipline put nuclear security in jeopardy? (AP Photo/Robert Burns) (The Associated Press)

This photo taken Jan. 9, 2014 shows Capt. Lauren Choate, a Minuteman 3 missile launch officer, at the console of a launch simulator used for training at F. E. Warren Air Force Base, Wyo. As disclosures of disturbing behavior by nuclear missile officers mount, to now include alleged drug use and exam cheating, Air Force leaders insist the trouble is episodic, correctable and not cause for public worry. The question persists, nonetheless: At what point do breakdowns in discipline put nuclear security in jeopardy? (AP Photo/Robert Burns) (The Associated Press)

FILE - In this Dec. 19, 2013 file photo, Defense Secretary Chuck Hagel takes questions as he briefs reporters at the Pentagon in Washington. As disclosures of disturbing behavior by nuclear missile officers mount, to now include alleged drug use and exam cheating, Air Force leaders insist the trouble is episodic, correctable and not cause for public worry. The question persists, nonetheless: At what point do breakdowns in discipline put nuclear security in jeopardy? This issue has now grabbed the attention of Hagel, who until recently had said little in public about a string of setbacks and missteps in the nuclear missile force reported by The Associated Press beginning in May 2013.(AP Photo/Charles Dharapak) (The Associated Press)