The obligation of the Indemnitors hereunder shall be continuous; provided, however, that any of the Indemnitors may give the Surety not less than thirty days written notice by registered mail of the Indemnitor’s desire to terminate this Agreement, but any such notice of termination shall not operate to modify, bar, discharge, limit, affect or impair the Indemnitor’s liability hereunder on or by reason of any such bond executed prior to the termination of such thirty days. Further, such notice of termination shall not operate to modify, bar, discharge, limit, affect or impair the Indemnitor’s liability hereunder with respect to a bond of undertaking which the Surety has become obligated to execute prior to the termination of such thirty days. Such notice of termination shall operate only with respect to those Indemnitors identified in such notice as requesting termination of this Agreement. Such notice shall not be deemed to have been given until received by the Surety at its home office