#J316FGSLTWTHGHOBSTWBOHSNPBHEL
In response Dwight Knapp to his Publication
People on Twitter are saying that it's an actual major command...one of several in the US that has been there since 1862? So it may not be referring to the District of Columbia/Washington DC. Hmm....interesting though!
https://en.wikipedia.org/wiki/United_States_Army_Military_District_of_Washington