The reason is simple: with older Los-Angeles-class fast-attack submarines (built between 1972 and 1996) retiring at a faster pace than Virginia subs are added, the U.S. Navy will face a shortfall in the number of active vessels in the near future.
The IRS says most taxpayers use the standard deduction. The standard deduction amount is different for each filing status and is higher for blind taxpayers and those who are age 65 or older. The amounts are also adjusted for inflation each year. 2016 tax return standard deductions
The standard deduction is $8,700 for the 2012 tax year if you file as the head of a household. Filers using the single or married filing separately statuses have a standard deduction of $5,950. If you use your standard deduction, the head of household status lets you avoid taxes on an extra $2,750 of your income.