The Ford-class aircraft carrier's Advanced Arresting Gear has incurred a critical cost breach after congressional authorizers made the Pentagon use a 2009 cost estimate as the program's baseline. The program acquisition unit cost and the average procurement cost for the AAG program exceed the 2009 baseline estimate by at least 50 percent, according to an April 7 letter from acting Navy Secretary Sean Stackley to congressional leaders obtained by Inside Defense . The breach triggers a Nunn-McCurdy review of the...