After serving as Navy acquisition executive for two years -- the latter dominated by a crisis in a key shipbuilding program -- Delores Etter is resigning, according to sources in the department and the defense industry. Etter plans to return to teaching at the U.S. Naval Academy, a Navy official confirmed. Before taking over the acquisition post in October 2005, Etter was a distinguished professor in the academy's electrical engineering department. The Navy official, who spoke on condition of anonymity,...