Pension reform can save money and improve fairness. Currently, those who serve for less than 20 years — 83 percent of those who join the military — get nothing, while those who do the full hitch can retire in their late 30s and get decades of benefits. The Pentagon’s Defense Business Board in 2011 proposed a better system for future troops that would introduce 401(k) plans, raise retirement ages, limit annual payouts to younger retirees and benefit all those serving more than five years. This could save $70 billion a year by 2034. The Pentagon would also do well to cut a head-scratcher of a program that gives $1 billion a year in unemployment checks to people who left the armed forces voluntarily.