36 CFR §1012.11

1. (a)You must comply with 5 CFR 2635.805(c), which details the authorization procedure for an employee to testify as an expert witness, not on behalf of the United States, in any proceeding before a court or agency of the United States in which the United States is a party or has a direct and substantial interest. This procedure means:
   1. (1)You must obtain the written approval of the Presidio Trust's General Counsel;
   2. (2)You must be in an approved leave status if you testify during duty hours; and
   3. (3)You must state for the record that you are appearing as a private individual and that your testimony does not represent the official views of the Presidio Trust.
2. (b)If you testify as an expert witness on a matter outside the scope of your official duties, and which is not covered by paragraph (a) of this section, you must comply with 5 CFR 2635.802.