Mister Burke's house

As much as its owner, Mister Burke's House in Megaton is very mysterious, being locked with a very hard lock.

Burke's house contains only a Pre-War Hat, a pair of Tortoiseshell Glasses, a Sawed-Off Shotgun, a full bottle of wiskey and some empty ones. Maybe the high level lock is something Burke installed as a means of protection rather than to keep his possessions safe.