You’ll have to run some calculations to decide whether to make a deposit to capture military service toward your federal retirement benefits if you are faced with such a choice, writes benefits expert Reg Jones. "To do that, you’ll need to know two things: how much you owe and how much your retirement annuity will be increased if you make a deposit," he writes. You’ll find his column at https://www.fedweek.com/item-view.php?tbl=1&ID=578.