32 C.F.R. § 21.450 What are the requirements for a termination of a grants officer's or agreements officer's appointment?
Title 32 - National Defense
A termination of a grants officer's or agreements officer's authority: (a) Must be in writing, unless the written statement of appointment provides for automatic termination. (b) May not be retroactive. (c) May be integrated into a written termination of the individual's appointment as a contracting officer, as appropriate.
Title 32: National Defense
PART 21—DoD GRANTS AND AGREEMENTS—GENERAL MATTERS
Subpart D—Authorities and Responsibilities for Making and Administering Assistance Awards
§ 21.450 What are the requirements for a termination of a grants officer's or agreements officer's appointment?

