G.D. Johnson, III ESA Trust u/a/d August 17, 1995

               AGREEMENT REGARDING JOINT FILING OF SCHEDULE 13D
               ------------------------------------------------
 
     The undersigned agree that Amendment No. 1 to the Statement on Schedule 13D
to which this Agreement is attached is filed on behalf of each one of them
pursuant to Rule 13d-1(f)(1)(iii). This Agreement may be executed in any number
of counterparts, each of which shall be deemed to be an original and all of
which shall together constitute one instrument.

Dated: July 11, 1997


                                        /s/ Xxxxxxx X. Xxxxxxx
                                --------------------------------------------   
                                        Xxxxxxx X. Xxxxxxx

                                X.X. Xxxxxxx, XXX ESA Trust u/a/d August 17,
                                1995


                                By:     /s/ X. Xxxxxx Xxxxxxx
                                   ----------------------------------------- 
                                        X. Xxxxxx Xxxxxxx
                                        Trustee

                                X.X. Xxxxxxx ESA Trust u/a/d August 17, 1995


                                By:     /s/ Xxx X. Xxxxxxx, Xx.
                                   -----------------------------------------
                                        Xxx X. Xxxxxxx, Xx.
                                        Trustee

                                        /s/ X. Xxxxxx Xxxxxxx
                                --------------------------------------------
                                        X. Xxxxxx Xxxxxxx