AM is "really, really badly burned," according to the source, who confirms that "his face is very burned." The source adds, "More than 50 percent of his body is burned and the worst is on his face."
The friend also said that Barker was burned "mostly from the waist down."
Both men are in critical but stable condition at the Joseph Still Burn Center in Augusta, Ga. E! News was told by the source that, as of this morning, DJ AM was being "kept in an incubator" as part of his treatment in order to maintain a sterile environment and prevent infections.
The source also said that AM was looking forward to coming home last night and, in fact, e-mailed a picture to a friend that showed him standing next to the Learjet right before the ill-fated takeoff. "He sent a picture being like, 'Hey, I'm coming home on this ride.'"
Another source reports that Barker's ex-wife, Shanna Moakler, who was just spotted with him Wednesday night at the Janet Jackson concert in Los Angeles, has left their Calabasas, Calif., home and is headed to Georgia to be with him.
As for Barker's friend and business partner "Lil Chris" Baker, who died in the crash: E! has learned that Baker was newly married and had a new baby. "He was the sweetest, nicest guy. He was like Travis' right-hand man."
Baker often appeared on Travis and Shanna's MTV reality series Meet the Barkers, which aired in 2005 and 2006.