ASD (HD) meaning in Governmental ?

The Assistant Secretary of Defense for Homeland Defense and Global Security, or ASD (HD&GS), is responsible for the supervision of DoD homeland defense activities, defense support of civil authorities, and cyber affairs for the Department of Defense. The position was established by the National Defense Authorization Act for Fiscal Year 2003 (P.L. 107-314, passed 2 December 2002). In particular, the ASD (HD&GS) is responsible for homeland preparedness, oversight of the two combatant commands that cover North and South America, and the transfer of technologies to homeland security use, pursuant to Section 1401 of the 2003 DOD Authorization Act. The ASD (HD&GS) reports to the Under Secretary of Defense for Policy.