Any reportable event (as defined in Title IV of ERISA) which might constitute grounds for the termination of any retirement plan of Borrower or for the appointment by the appropriate regulatory body of a trustee to administer any such retirement plan shall have occurred and be continuing for thirty (30) days after written notice to such effect shall have been given to Borrower or any such retirement plan shall be terminated or a trustee shall be appointed to administer any such retirement plan, or the Pension Benefit Guaranty Corporation shall institute proceedings to terminate any such retirement plan or to appoint a trustee to administer any such retirement plan.