If you work for the post office, you're a civil servant. The Civil Rights movement focused on the notion that all American citizens were entitled to the same basic civil liberties.
There is also time limit to consider for sending the amended returns, and it is generally three years from the time you filed the returns or two years after the tax payment (whichever is later). If you plan to amend more than one tax return, you have to file separate 1040X for every one you want to change.
Processing of prior year tax return take 6-12 weeks from the date IRS received your return, (IRS does rush to process prior years, since the taxpayer was in no hurry to file) and the REFUND WILL NOT be DD, DD is only for current tax year. The refund can only be mailed to you at the address you listed on the 2008 return.