Your roaming around the Broken buildings of Washington D.C and your keeping your eyes and ears out because well....super mutants and the like.
When you come across the sight of a absolute massacre
Raiders, ghouls and super mutants alike were strewn about with Bulley casings everywhere.You kneel down and pick one up
5.56....ammunition that assault rifles normally use, but there are a lot of laser burns and discard microfusion cells...
All of this seems familier somehow....