Creditors' committees can play a major role in chapter 11 cases. The committee is appointed by the U.S. trustee and ordinarily consists of unsecured creditors who hold the seven largest unsecured claims against the debtor. 11 U.S.C. § 1102. Among other things, the committee: consults with the debtor in possession on administration of the case; investigates the debtor's conduct and operation of the business; and participates in formulating a plan. 11 U.S.C. § 1103. A creditors' committee may, with the court's approval, hire an attorney or other professionals to assist in the performance of the committee's duties. A creditors' committee can be an important safeguard to the proper management of the business by the debtor in possession.