Not your usual post-concert ritual: After performing for fans in Atlanta last night, the rapper T.I. packed up to head to prison, where he’s due to serve a sentence of one year and one day on federal weapons charges. 16,000 fans turned out at the Philips Arena to celebrate the native son, who brought his children on stage, said he hoped his fans would learn from his mistakes, and ended by saying "I'll see y'all in 366 days." T.I. was rung up on charges of trying to purchase unregistered machine guns from federal agents in 2007.