An "aggressive" Pentagon analytical effort to identify critical and fragile niches in the defense industrial base has turned up several areas of concern for senior military acquisition officials, who have developed plans to intervene if necessary, according to a new government report. The "sector-by-sector, tier-by-tier" evaluation of the industrial base, begun at the direction of the deputy defense secretary in March 2011, has pinpointed "at-risk" sectors of the nation's shipbuilding, munitions and missiles business, according to the Pentagon's annual industrial...