Security Interest. Except with respect to Government Receivables and the Provider Lockbox Account, subject to anti-assignment provisions of state or federal law, Provider hereby grants Manager a security interest in and a first priority lien on all of Provider’s assets (tangible and intangible), including its accounts, payment intangibles, deposit accounts, documents, equipment, general intangibles, instruments, inventory, investment property and any other assets (collectively, the “Collateral”) to secure the payment by Provider of all obligations and liabilities owed by Provider to Manager, including without limitation the Management Fee. Provider and PTG shall execute such further documents and instruments as may be deemed necessary or desirable by Manager, in Manager’s sole discretion, to effect the provisions of this section. Provider authorizes Manager without any further consent of Provider, at any time and from time to time, to file or record financing statements, amendments thereto, and other filings or documents with respect to the Collateral in such form as Manager determines to be appropriate to perfect or continue or maintain the perfection of the security interests granted under this Agreement, and such financing statements and amendments may describe the Collateral covered thereby as “all assets of the debtor whether now existing or hereafter acquired” or similar words.