The group presenting the colors before the Super Bowl were from the Military District of Washington.
https://en.m.wikipedia.org/wiki/United_States_Army_Military_District_of_Washington
Their patch? Nothing is Random.
Besides Fort McNair, the following installations are included under the umbrella of the MDW's command:
Joint Base Myer–Henderson Hall, Virginia
Fort Belvoir, Virginia
Fort A.P. Hill, Virginia
Fort Meade, Maryland
Fort Hamilton, New York
The Military District of Washington also represents the U.S. Army in the Joint Force Headquarters National Capital Region (JFHQ-NCR), as well as oversight of all ceremonial operations in Arlington National Cemetery.