As for everything I did up to that point, I went straight to Megaton after for some reason waking up unconscious outside vault 101, my elder robes gone only to be replaced with a vault jumpsuit. Then after arriving at Megaton he learned from several people that James came and went, after learning this he decided that he needed to regroup with the rest of the Brotherhood, then find James and continue the completion of project purity. But before any of that he needed supplies and after learning from Moira of a super-market nearby with potential supplies, he went for it.
After a near-death experience with a bottle-cap mine and a some lucky shots, he made it out with several weapons that he could put to use. After heading back to Megaton to sell supplies Lyon's continued on after he heard of his daughters squad the Lyon's pride fighting mutants down by GNR. It would have been a good opportunity to figure out what happened while he was gone and it wasn't that far away the Citadel anyways. Then once arriving through the use of metros he met up with the Lyon's pride, cleansed the area of mutants and got the gist of what was going on once he met and got 3-dogs satellite dish repaired. Finally, he proceeded to the Citadel and gained access (through the use of a glitch, mainly just for roleplay reasons), then preceded to gather a few supplies enlist the help of Star Paladin Cross And continue for Rivet City.