This excerpt taken from the MRO DEF 14A filed Mar 10, 2008.
The Audit and Finance Committee will meet at least five times a year, with authority to convene additional meetings as circumstances require. All Committee members are expected to attend each meeting, in person or via teleconference. The Committee may invite members of management, auditors, or others to attend meetings and provide pertinent information, as necessary. Meeting agendas will be prepared and provided in advance to members, along with appropriate briefing materials. Minutes of each meeting will be prepared. If requested by any member of the Committee, time shall be allotted for an executive session of Committee members only and any executives or outside advisors they might want to invite.