The one thing I find interesting is that the other members of Kyle’s armed group seem to have disappeared and gone to ground. Unless I missed something. Seems they could shed some light here as well. You’d think they’d have at least waited for him while he did the interview. They basically abandoned him. Not a great group of friends.
His lawyer's press release states that Kyle became separated from his group while providing first aid to protestors and was assaulted while trying to make it back to friendly lines.