1 Exhibit 10.15 CAMPBELL PROPERTIES CORPORATION 3605 Hillside Circle Lincoln, Nebraska 68506 402-489-2039 September 18, 2000 Mr. Gary Kuck, President CEO Centurion International, Inc. 3425 North 44th Street Lincoln, Nebraska 68504 RE. 1901 Pioneers...

   1
                                                                   Exhibit 10.15

                        XXXXXXXX PROPERTIES CORPORATION
                              0000 Xxxxxxxx Xxxxxx
                            Xxxxxxx, Xxxxxxxx 00000
                                  000-000-0000


September 18, 2000


Xx. Xxxx Xxxx, President CEO
Centurion International, Inc.
0000 Xxxxx 00xx Xxxxxx
Xxxxxxx, Xxxxxxxx 00000

                  RE. 0000 Xxxxxxxx Xxxxxxxxx Lease

Dear Xx. Xxxx:

This letter is to confirm the verbal extension of your lease at 0000 Xxxxxxxx
Xxxxxxxxx, Xxxxxxx, Xxxxxxxx 00000 for the period of August 1, 2000 through July
31, 2001.

The lease terms and conditions shall remain the same as the original terms of
the lease July 15, 1997.


Sincerely,

XXXXXXXX PROPERTIES CORPORATION

 /s/ Xxxx X. Xxxxxxxx
By:  Xxxx X. Xxxxxxxx
Its:  President


ACCEPTED and AGREED TO this 18th day of September 2000.

CENTURION INTERNATIONAL, INC.

 /s/ Xxxx X. Xxxx
By: Xxxx X. Xxxx
Its:  President & CEO