Chapter 11 of the Bankruptcy Code trusts a debtor in possession to operate its business.  In general, a debtor in possession “is free to use, sell[,] or lease property of the . . . estate in the operation of the debtor’s business.”1  This discretion is “at the heart” of the powers of a debtor in possession, 2  and courts are reluctant “to interfere, or to permit other parties in interest to interfere, in the making of routine, day-to-day business decisions.” 3  Therefore, a court will not disturb