The Borrowers shall immediately sign and deliver to the Administrative Agent, for the benefit of the Lenders, on request all other instruments as required or desired by the Administrative Agent or the Lenders from time to time in compliance with or in accomplishment of the covenants and agreements of the Borrowers made in this Fourth Amendment and any other instruments and documents referred to or mentioned herein, all as may be necessary or appropriate in connection therewith (as determined by the Administrative Agent and the Lenders in their respective discretion).