which reserve military force, composed  of National Guard military members has Operation Phalanx as program 
Operation Phalanx (2010-2016): Operation "Phalanx" was a United States National Guard program to assist the Department of Homeland Security (DHS) in the security of the United States-Mexico Border. National Guard of the United States: The National Guard of the United States, part of the reserve components of the United States Armed Forces, is a reserve military force, composed of National Guard military members or units of each state and the territories of Guam, of the Virgin Islands, and of Puerto Rico, as well as of the District of Columbia, for a total of 54 separate organizations.
The National Guard