The Pentagon's independent cost estimators have pared back forecasted savings the Navy can expect to realize under a multiyear procurement of Virginia-class submarines from $2.5 billion to $1.8 billion, giving the planned 2019 deal the most anemic cost avoidance package achieved through a block buy in the program's two decades of consolidated purchases. On Oct. 30, Pentagon acquisition executive Ellen Lord notified lawmakers that the office of cost assessment and program evaluation has estimated a savings of 6.8% for the...