(By Kris Jenkins, For The New York Times) EDITOR'S NOTE: Kris Jenkins is a former All-Pro defensive lineman for the Carolina Panthers. A series of major operations (one shoulder, three knee) forced him to retire from the New York Jets after the 2010 season. Today, he works for a New York-based cable channel. Here are excerpts from recent interviews that New York Times sportswriter Greg Bishop conducted with Jenkins, who said he wanted to share the often untold stories of life as a professional football player.NFL fans, people outside, they have no clue what goes on. You ever been in a car crash? Done bumper cars? You know when that hit catches you off guard and jolts you, and you're like, what the hell? Football is like that. But 10 times worse.