The Pledgor shall at any time and from time to time, at its own cost and expense, promptly execute and deliver all further instruments and documents, and take all further action, that may be necessary or desirable, or that the Collateral Agent may reasonably request in writing, in order to perfect and protect any Lien granted or purported to be granted hereby or to enable the Collateral Agent to exercise and enforce its rights and remedies hereunder with respect to any Pledged Collateral.