I was just heading to Underworld to pick up Fawkes and found that Brotherhood of Steel Paladin dead by her post right in front of the Washington Monument. It was a little upsetting because she was one hell of a fighter. There were dead creatures and Super Mutants all around her post. What I'm wondering is will another Brotherhood of Steel member return to take her place and hold down that post, or is that area lost? I've found plenty of dead BoS members dead out in the Wasteland but I never noticed if any new Paladins come to fill the place of their dead comrades.