What looks like a tag in Rosslyn, taken while I was walking through a residential area on the way to lunch... DU, what is that? Democratic Underground? Kind of reminds me of the abbreviation used for types of ammunition, like APFSDSDU, or Armor Piercing, Fin Stabilized, Discarding Sabot, Depleted Uranium, where DU stood for Depleted Uranium. Now, DU has been replaced by Tungsten, or Wolfram (hence the periodic table annotation, W for Tungsten), which is safer and cheaper (supposedly). Rounds now have be redesignated as APFSDSW, not to be confused with DSW shoe warehouse.
