With the stroke of a pen, the Navy's acquisition executive has increased the size of the Virginia class submarine program, expanding the official acquisition target from 30 to 48 boats, adding a $68 billion obligation to future Pentagon budgets and making the total cost of the nuclear-powered attack submarine project second only to the F-35 Joint Strike Fighter. On Feb. 13, acting Navy acquisition executive Allison Stiller approved an update to the Virginia-class submarine acquisition baseline program, "extending the program...