From time to time, at its expense, promptly execute and deliver all further instruments and documents, and take all further action that the Buyer or any of its assignees or pledgees under the Transaction Documents may reasonably request in order to perfect, protect or more fully evidence the purchases, sales and assignments and security interests hereunder, or to enable the Buyer or any such assignee or pledgees to exercise or enforce any of its respective rights with respect to the Equipment. Without limiting the generality of the foregoing, each Seller will upon the request of the Buyer or any of its assignees under the Transaction Documents authorize and file such financing or continuation statements, or amendments thereto or assignments thereof, and such other instruments or notices, as may be necessary or appropriate.