Disclosure of returns and return information (including taxpayer return information) to officers and employees of the Department of Justice or another Federal agency. Returns and return information (including taxpayer return information), as defined in section 6103(b)(1), (2), and (3) of the Internal Revenue Code, shall, to the extent provided by section 6103(i) (1), (2), and (3) and subject to the requirements of section 6103(i) (1) and (2), be open to inspection by or disclosure to officers and employees of the Department of Justice (including United States attorneys) or of another Federal agency (as defined in section 6103(b)(9)) personally and directly engaged in, and for their necessary use in, any Federal grand jury proceeding, or preparation for any administration or judicial proceeding (or their necessary use in an investigation which may result in such a proceeding), pertaining to enforcement of a specifically designated Federal criminal statute not involving or related to tax administration to which the United States or such agency is or may be a party.

Disclosure of returns and return information (including taxpayer return information) by officers and employees of the Department of Justice or another Federal agency. (1) Returns and return information (including taxpayer return information), as defined in section 6103(b) (1), (2), and (3) of the Code, disclosed to officers and employees of the Department of Justice or other Federal agency (as defined in section 6103(b)(9)) as provided by paragraph (a) of this section may be disclosed by such officers and employees to other persons, including, but not limited to, persons described in subparagraph (2) of this paragraph, but only to the extent necessary in connection with a Federal grand jury proceeding, or the proper preparation for a proceeding (or in connection with an investigation which may result in such a proceeding), described in paragraph (a). Such disclosures may include, but are not limited to, disclosures where necessary—

To properly obtain the services of persons having special knowledge or technical skills (such as, but not limited to, handwriting analysis, photographic development, sound recording enhancement, or voice identification);

To properly interview, consult, depose, or interrogate or otherwise obtain relevant information from, the taxpayer to whom such return or return information relates (or such taxpayer's legal representative) or any witness who may be called to give evidence in the proceeding; or

To properly conduct negotiations concerning, or obtain authorization for, disposition of the proceeding, in whole or in part, or stipulations of fact in connection with the proceeding.

Among those persons to whom returns and return information may be disclosed by officers and employees of the Department of Justice or other Federal agency as provided by subparagraph (1) of this paragraph are—

Other officers and employees of the Department of Justice (including an office, board, division, or bureau of such department, such as the Federal Bureau of Investigation or the Drug Enforcement Administration) or other Federal agency described in subparagraph (1), such as clerical personnel (for example, secretaries, stenographers, docket and file room clerks, and mail room employees) and supervisory personnel (for example, in the case of the Department of Justice, Section Chiefs, Deputy Assistant Attorneys General, Assistant Attorneys General, the Deputy Attorney General, the Attorney General, and supervisory personnel of the Federal Bureau of Investigation or the Drug Enforcement Administration);

Officers and employees of another Federal agency (as defined in section 6103(b)(9)) working under the direction and control of such officers and employees of the Department of Justice or other Federal agency described in subparagraph (1); and

Court reporters.