he then accompanied them to arlington national cemetery. he laid a wreath at the tomb of the unknown soldier, which is actually in its centennial year this year, since 1948, the tomb of the unknowns has been guarded night and day by 24-hour military guard, and while the public can witness that from afar, none of us are allowed to get anywhere near it as a sacred site and a literally well-guarded one, but this week sort of specially for its centennial for its 100th year, americans have been -- just regular folks have been allowed to line up and approach the tomb of the unknowns for the first time in decades so people have been able to leave flowers or say a prayer there. it's a very unusual thing. it's the first time in decades. today on veterans day, the biden administration announced new research, new resources, new support for iraq and afghanistan veterans who were exposed to toxic burn pits during their service thanks to the inexplicable but apparently systemic practice of handling waste of all kinds at military facilities in those wars