; and for research, development, test and evaluation, $872,525,000, of which $507,171,000 shall be for counter-narcotics support; $117,900,000 shall be for the drug demand reduction program; $217,178,000 shall be for the National Guard counter-drug program; and $30,276,000 shall be for the National Guard counter-drug schools program: Provided , That the funds appropriated under this heading shall be available for obligation for the same time period and for the same purpose as the appropriation to which transferred: Provided further , That upon a determination that all or part of the funds transferred from this appropriation are not necessary for the purposes provided herein, such amounts may be transferred back to this appropriation: Provided further , That the transfer authority provided under this heading is in addition to any other transfer authority contained elsewhere in this Act. Office of the inspector general For expenses and activities of the Office of the Inspector General in carrying out the provisions of the Inspector General Act of 1978, as amended, $329,273,000, of which $325,236,000 shall be for operation and maintenance, of which not to exceed $700,000 is available for emergencies and extraordinary expenses to be expended on the approval or authority of the Inspector General, and payments may be made on the Inspector General's certificate of necessity for confidential military purposes; of which $60,000, to remain available for obligation until September 30, 2021, shall be for procurement