Such Borrower shall not, and shall not permit any of its Material Subsidiaries to, create, assume or incur any Lien on any of its assets or property or upon any Equity Interests of any such Material Subsidiary, which Equity Interests are now owned or hereafter acquired by such Borrower or such Subsidiary to secure any Indebtedness of such Borrower or any other Person (other than the Indebtedness under this Agreement) other than Permitted Liens, without providing that the Loans of such Borrower shall be equally and ratably secured with such Indebtedness until such time as such Indebtedness is no longer secured by a Lien. Notwithstanding the foregoing, each Borrower may, and may permit any of its Material Subsidiaries to, create, assume or incur any Indebtedness secured by a Lien, other than a Permitted Lien, without securing the Loans of such Borrower, provided that the aggregate principal amount of all Indebtedness then outstanding secured by Liens (other than Permitted Liens) does not exceed 15% of Consolidated Net Tangible Assets.