; (2) participating in court proceedings and engaging in any litigation, including civil and criminal matters, that such Special Counsel considers necessary; a (3) appealing any decision of a court in any case or proceeding in which such Special Counsel participates in an official capacity; (4) reviewing all documentary evidence available from any source; (5) determining whether to contest the assertion of any testimonial privilege; (6) receiving appropriate national security clearances and, if necessary, contesting in court (including, where appropriate, participating in in camera proceedings) any claim of privilege or attempt to withhold evidence on grounds of national security; (7) making applications to any Federal court for a grant of immunity to any witness, consistent with applicable statutory requirements, or for warrants, subpoenas, or other court orders, and, for purposes of sections 6003, 6004, and 6005 of title 18, exercising the authority vested in a United States attorney or the Attorney General; (8) inspecting, obtaining, or using the original or a copy of any tax return, in accordance with the applicable statutes and regulations, and, for purposes of section 6103 of the Internal Revenue Code of 1986 and the regulations issued thereunder, exercising the powers vested in a United States attorney or the Attorney General; (9) initiating and conducting prosecutions in any court of competent jurisdiction, framing and signing indictments, filing informations, and handling all aspects of any case, in the name of the United States