Each Pledgor hereby agrees that at any time and from time to time, at the expense of such Pledgor, such Pledgor will promptly execute and deliver all further instruments and documents, and take all further action, that may be necessary or that Agent may reasonably request, in order to perfect and protect any security interest granted or purported to be granted hereby, or to enable Agent or any of its agents to exercise and enforce its rights and remedies under this Agreement with respect to any portion of such collateral.