In 2008, the first wave of a generation 78 million strong will hit the Social Security system Greg Witt was born in January 1946, raised on Elvis, served two years in the U.S. Army and retired after 38 years of working for Allen-Bradley in Milwaukee. Now, he is on the cusp of turning 62 and reaching another milestone - receiving Social Security. "It's kind of like another step in your life," he says. "It feels kind of good, all these years of working and contributing and I get something back." Witt is among the first of 78 million baby boomers...