Former Blink 182 drummer Travis Barker has been left critically injured after a Learjet crashed while departing from a South Carolina airport. 4 people were killed, while two people - including Barker and DJ AM, a famed Hollywood DJ - were injured. Barker was transported to a burn center in Augusta, Georgia, where he was listed in critical condition. Barker had performed Friday night at an event alongside Perry Farrell, the former Jane's Addiction singer, as well as Gavin DeGraw and DJ AM. It was not immediately clear whether any of those performers, aside DJ AM were traveling with Barker....