Document:

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                                                                   Exhibit 10.14

                                 LEASE AGREEMENT

      THIS WAREHOUSE LEASE (the "Lease") is made and entered into as of the 15th
day of July, 1997, by and between CAMPBELL PROPERTIES CORPORATION, a Nebraska
corporation ("Lessor"), and CENTURION INTERNATIONAL, INC., a Nebraska
corporation ("Lessee").

                                      RECITALS

      WHEREAS, Lessor is the owner of the following described real property
generally located at 1901 Pioneers Boulevard in Lincoln, Lancaster County,
Nebraska, and all improvements located thereon, consisting of approximately
66,500 square feet of warehouse and office space (the "Leased Premises"):

      Lot 5, 6 and 7, Block 1, Lincoln industrial Park, City of Lincoln,
      Lancaster County, Nebraska; and

      WHEREAS, Lessee desires to lease from Lessor, and Lessor desires to lease
to Lessee, the Leased Premises pursuant to the terms and conditions set forth
below.

      NOW, THEREFORE, in consideration of the foregoing, the mutual promises,
covenants, representations and warranties hereinafter contained and other good
and valuable consideration, the receipt and sufficiency of which is hereby
acknowledged, and intending to be legally bound, the parties hereto agree as
follows:

1.    Term and Permission.

      a.    Initial Term. The initial term of this Lease shall be for a period
            of three (3) years (the "Initial Term") beginning on August 1, 1997
            (the "Commencement Date") and ending on July 31, 2000 (the
            "Termination Date").

      b.    Quiet Enjoyment. Lessee shall have sole possession of the Leased
            Premises for the entire Term (as defined below) hereof, subject to
            satisfaction by Lessee of its obligations hereunder.

      c.    Renewal Option. Provided that Lessee is not in default of any
            material term, condition or covenant contained in this Lease at the
            time of renewal this Lease may be extended at the option of Lessee
            for three (3) renewal terms of one (1) consecutive year each (each,
            a "Renewal Term") on the same terms and conditions set forth herein,
            subject to the rent adjustment described in Section 2(a)(ii) hereof.
            In order to exercise each such renewal option, Lessee must deliver
            written notice of its intent to renew to Lessor no less than one
            hundred twenty (120) days prior to the expiration of the
            then-current Term. The Initial Term and Renewal Terms, if any, shall
            be referred to collectively herein as the "Term."
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      d.    Option to Terminate. Notwithstanding anything to the contrary set
            forth herein, Lessee shall have the right to terminate this Lease as
            of July 31, 1999 (the "Early Termination Date"). In order to
            exercise such option, Lessee must deliver written notice of its
            intent to terminate this Lease to Lessor on or before January 31,
            1999. In the event that Lessee exercises its right to terminate this
            Lease, Ninety-Nine Thousand Seven Hundred Fifty Dollars and
            No/100ths ($99,750.00) (the "Early Termination Fee") shall be due
            and payable by Lessee to Lessor on the Early Termination Date.

2.    Rent.

      a.    Annual Rental.

            i.    Initial Annual Rental. During the Initial Term, Lessee agrees
                  to pay a minimum annual rental for Lessor's interest in the
                  Leased Premises in the sum of One Hundred Ninety-Nine Thousand
                  Five Hundred Dollars and No/100ths ($199,500.00) (the "Initial
                  Annual Rental") payable in twelve equal monthly payments of
                  Sixteen Thousand Six Hundred Twenty-Five Dollars and No/100ths
                  ($16,625.00) (the "Initial Monthly Rental").

            ii.   Renewal Annual Rental. The annual rental for each Renewal
                  Term, if any, shall be established as follows, the Annual
                  Rental (as hereinafter defined) for the then-current Term
                  shall be adjusted on the first day of the first full calendar
                  month of the Renewal Term (the " Renewal Date"), to reflect
                  general consumer price changes in the United States economy.
                  These adjustments shall be made as follows:

                  (1)   A fraction shall be determined whose denominator is the
                        U.S. Department of Labor Consumer Price Index for All
                        Urban Consumers for the North Central Area of the United
                        States, Class C Cities, All Items Subindex (the "CPI-U")
                        for the third calendar month prior to calendar mouth in
                        which the then-current Term began (i.e. May, 1997) and
                        whose numerator is the CPI-U for the third calendar
                        month prior to the calendar month in which the Renewal
                        Date occurs (i.e. May, 2000).

                  (2)   The Annual Rental for the then-current Term shall be
                        multiplied by the lesser of (i) the fraction determined
                        under subparagraph (1) above, or (ii) one hundred three
                        percent (103%), and the product shall be the annual
                        rental for the then-current Renewal Term (the "Renewal

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                        Annual Rental payable in twelve equal monthly payments
                        (the "Renewal Monthly Rental").

                  (3)   The Initial Annual Rental, and Renewal Annual Rental
                        shall be referred to jointly herein as the "Annual
                        Rental." The Initial Monthly Rental and the Renewal
                        Monthly Rental shall be referred to jointly herein as
                        the "Monthly Rental."

                  (4)   In no event shall the Renewal Annual Rental be lower
                        than the Annual Rental for the then-current Term.

                  (5)   If the CPI-U is discontinued or replaced, then Lessor
                        shall substitute a reasonably equivalent other index
                        which will accomplish the same result of reflecting
                        general consumer price changes in the U.S. economy.

      b.    Payment of Rent. As of the Commencement Date, Lessee shall pay the
            Monthly Rental without any prior demand therefor and without any
            deduction or offset whatsoever, in advance in lawful money of the
            United States of America, to Lessor on the first business day of
            each calendar month during the Term hereof as minimum monthly rent
            for Lessor's interest in the Leased Premises for such month. Lessee
            shall make all payments of rent and other expenses to Lessor at
            Lessor's address set forth in Section 16 hereof or at such other
            address as Lessor may from time to time request in writing. The
            first Monthly Rental shall be due and payable on the Commencement
            Date and thereafter shall be due and payable on the first day of
            each successive calendar month during the Term hereof and will be
            delinquent if not paid within ten (10) days following receipt of
            written notice from Lessor of the failure to pay such rent on the
            first day of the month.

      c.    Additional Rent. On the Commencement Date, Lessee shall pay Ten
            Thousand Dollars and No/100ths ($10,000.00) (the "Additional
            Rental") in cash or certified funds to Lessor as additional rent
            hereunder. In addition to the Annual Rental and the Additional
            Rental (which is to include existing air conditioning and dock
            levelers), Lessee shall pay all real and personal property taxes and
            assessments levied against the Leased Premises during the Term
            hereof prior to delinquency. Taxes and assessments which are levied
            or assessed against the Leased Premises with respect to the first
            and last years of the Term of this Lease shall be prorated. In the
            event that such taxes are paid directly to the taxing authority by
            Lessee, Lessee shall provide Lessor with a copy of the receipt
            evidencing payment of all such taxes as and when such receipt is
            received by Lessee.

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                                                       Draft Dated July 11, 1997

      d.    Net Rent. The Monthly Rental shall be net to Lessor in each year
            during the Term of this Lease. All reasonable costs, expenses, and
            obligations of every kind relating to the Leased Premises (except as
            otherwise specifically provided in this Lease) which may arise or
            become due during the Term of this Lease shall be paid by Lessee,
            and Lessor shall be indemnified by Lessee against such costs,
            expenses, and obligations.

      e.    Security Deposit. On the Commencement Date Lessee shall deposit with
            Lessor the sum of Sixteen Thousand Six Hundred Twenty-Five Dollars
            and No/100ths ($16,625.00) as a security deposit (the "Security
            Deposit") to be held as security for the performance by Lessee of
            all of Lessee's obligations imposed under this Lease. If Lessee
            fails to pay rent or other charges due under this Lease, or
            otherwise defaults with respect to any provision of this Lease,
            Lessor may use, apply or retain all or any part of the Security
            Deposit to cure the default or to compensate Lessor for all damage
            sustained by it resulting from Lessee's default. if any part of the
            Security Deposit is so used or applied Lessee shall, upon request,
            deposit cash with Lessor in an amount sufficient to restore the
            Security Deposit to its original amount. If Lessee shall fully and
            faithfully perform all of its obligations under this Lease, the
            Security Deposit or any balance of the Security Deposit shall be
            returned to Lessee at the expiration of the Term hereof or after
            Lessee has vacated the Leased Premises, whichever is later;
            provided, however, that Lessor may retain the Security Deposit until
            such time as any amount due from Lessee has been paid in full. No
            right or remedy available to Lessor as provided in this Section 2(e)
            shall preclude or extinguish any other right or remedy to which
            Lessor may be entitled.

3.    Use of Premises. Unless otherwise approved in writing by Lessor, Lessee
      shall use and occupy the Leased Premises solely as a light manufacturing
      plant and Lessee shall make no use of the Leased Premises which would
      cause the fire and extended coverage insurance required hereby to be
      canceled. Lessee shall conduct its business on the Leased Premises in
      compliance with all federal, state, or municipal statutes, regulations, or
      ordinances. Lessee shall not do or permit anything to be done in or about
      the Leased Premises which would constitute a nuisance.

4.    Insurance and Indemnification.

      a.    Lessee's Insurance. As additional rent during the Term of the Lease,
            Lessee shall obtain and keep in full force and effect, at its sole
            cost and expense, the following insurance (the "Lessee's Insurance")
            with a responsible insurance company or companies admitted to do
            business in the State of Nebraska and otherwise reasonably
            acceptable to Lessor:

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            i.    Comprehensive commercial general liability insurance issued on
                  an occurrences basis in which the limits of liability for
                  primary coverage shall not be less than One Million and No/100
                  Dollars ($1,000,000.00) per occurrence, not less than Two
                  Million and No/100 Dollars ($2,000,000.00) in the aggregate,
                  with property damage limits of Five Hundred Thousand and
                  No/100 Dollars ($500,000.00). Further, Lessee shall provide
                  umbrella liability coverage of an additional Three million and
                  No/100 Dollars ($3,000,000.00) per occurrence.

            ii.   Property coverage and contents insurance for all of Lessee's
                  fixtures, furnishings, equipment and inventory.

            iii.  Workers' compensation and employer liability coverage as may
                  be required by the State of Nebraska, with a waiver of
                  subrogation in favor of Lessor.

            iv.   Fire and "all risk" extended coverage/named perils insurance
                  for the full replacement value of all improvements which form
                  a part of the Leased Premises.

      b.    Evidence of Lessee's Insurance. Lessee shall promptly provide to
            Lessor evidence of the insurance coverages required to be maintained
            by Lessee under this Section, represented by Certificates of
            Insurance issued by the insurance carrier(s). The insurance coverage
            required in Section 4(a)(i) hereof shall name Lessor as an
            additional insured thereunder, contain cross-liability and
            severability of interest endorsements, state that such insurance is
            primary insurance as regards any other insurance carried by Lessee
            and contain a waiver of subrogation in favor of Lessor. The
            insurance coverage required in Section 4(a)(iv) hereof shall name
            Lessor as loss payee thereunder, contain cross-liability and
            severability of interest endorsements, state that such insurance is
            primary insurance as regards any other insurance carded by Lessee
            and contain a waiver of subrogation in favor of Lessor. All such
            insurance policies and/or Certificates of Insurance required in this
            Section shall state that Lessor will be notified in writing thirty
            (30) days prior to cancellation, material change or non-renewal of
            insurance. Timely renewal certificates shall be provided to Lessor
            upon request.

      c.    Indemnification. Lessee hereby agrees to indemnify and hold harmless
            Lessor, its agents, and employees from and against any and all
            claims or demands for the loss, theft or damage to property or for
            injury or death to any person from any cause whatsoever while in,
            upon, or about the Leased Premises during the Term hereof, except to
            the extent that such claim is compensated by insurance and except
            further that Lessee's indemnification shall not include an
            indemnification for liability for the

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            gross negligence or willful misconduct of Lessor, its agents, or
            employees. Each party hereto shall indemnify and hold the other
            party, its agents, and employees harmless from and against any and
            all claims and liability arising from any breach or default by such
            indemnifying party in the performance of any obligation of such
            indemnifying party under this Lease or arising from the gross
            negligence or willful misconduct of such indemnifying party, its
            agents, employees, or invitees.

      d.    Mutual Waiver of Subrogation. Without limiting the obligation of
            Lessee to maintain insurance which permits waiver of subrogation
            (unless otherwise approved in writing by Lessor) and notwithstanding
            the indemnification provisions set forth above or anything else to
            the contrary set forth herein, Lessor and Lessee hereby waive all
            causes of action and rights of recovery against each other, against
            all subtenants or assignees of Lessee and against any other person
            or entity holding an interest in the Leased Premises (together, the
            "Affected Parties"), and against the agents, officers, employees,
            and invitees of the Affected Parties for any loss occurring to the
            property of the Affected Parties resulting from any of the perils
            insured against under any and all fire or other extended casualty
            insurance policies in effect at the time of any such loss regardless
            of cause or origin of such loss.

5.    Maintenance, Repairs and Replacements. During the Term hereof, Lessee
      shall take good and reasonable care of the Leased Premises and, at its
      sole cost and expense, undertake and perform all necessary maintenance and
      make all repairs and replacements as shall be reasonably necessary to keep
      the Leased Premises in good condition and repair. Lessee agrees that all
      damage or injury done to the Leased Premises by Lessee or by any person,
      other than Lessor or those controlled or contracted by Lessor, who may be
      in or upon the Leased Premises shall be repaired by Lessee at its sole
      expense. Lessee further agrees at the expiration of this Lease or upon the
      earlier termination thereof, to quit and surrender the Leased Premises in
      good condition and repair, reasonable wear excepted. Notwithstanding
      anything to the contrary contained in this Lease, nothing contained in
      this Section shall act or be interpreted so as to prohibit Lessor or
      Lessee from collecting any amounts covered by fire or other extended
      casualty insurance and, subject to Lessee's obligations under Section 12
      hereof, no party shall be liable to the other for damages to the Leased
      Premises to the extent those damages are compensated in full by such
      insurance and the proceeds thereof are paid to or received by the damaged
      party and adequate therefor.

6.    Utilities and Services. Lessee agrees to pay for all water, fuel, gas,
      oil, heat, electricity, power, materials, and services which may be
      furnished to it or used by it in or about the Leased Premises and to keep
      the Leased Premises free and clear of any lien or encumbrance of any kind
      whatsoever. Lessor shall not be liable, and the Monthly Rental and other
      payments to Lessor shall not abate, for interruptions to the telephone,
      plumbing, heating, ventilating, air conditioning, elevator, electrical or
      other mechanical or utility systems or

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      cleaning services, by reason of accident, emergency, repairs, alterations,
      improvements, or shortages or lack of availability of materials or
      services.

7.    Lessor's Improvements. Lessor shall, at Lessee's sole cost and expense,
      pave or rock parking improvements on the Leased Premises for at least two
      hundred fifty (250) parking stalls, as shown on Exhibit "A" attached
      hereto and incorporated herein by this reference, and install one (1)
      overhead door and an on-grade ramp on the Leased Premises (collectively,
      the "Improvements"). All plans and specifications and bids for the
      Improvements shall be approved by Lessor and Lessee. Construction of the
      Improvements shall be commenced as soon as practicable after the
      Commencement Date and Lessor shall cause construction to be completed as
      soon as possible. The cost of construction of the Improvements (the
      "Principal Amount") shall be paid for by Lessee over the term of this
      Lease with interest thereon at a fixed rate equal to nine percent (9%) per
      annum ("Interest"), payable in equal monthly installments of the Principal
      Amount and Interest beginning on the Commencement Date and continuing on
      the first day of each succeeding month thereafter until the Principal
      Amount is paid in full. In the event that Lessee exercises its right to
      terminate this Lease pursuant to Section 1(e) hereof, the Principal
      Amount then remaining unpaid, together with all accrued and unpaid
      Interest thereon, shall immediately become due and payable on the Early
      Termination Date. Lessee shall make all payments of the Principal Amount
      and Interest to Lessor at Lessor's address set forth in Section 16 hereof
      or at such other address as Lessor may from time to time request in
      writing. All such payments will be delinquent if not paid within ten (10)
      days following receipt of written notice from Lessor of the failure to
      make such payment on the first day of the month.

8.    Alterations. Lessee shall not make, or suffer to be made, any
      alternations, additions, or improvements to the Leased Premises without
      the prior written consent of Lessor, which shall not be unreasonably
      withheld. Lessor shall generally consent to alterations, additions, or
      improvements which do not adversely affect the value of the Leased
      Premises and which do not affect the structure or operation thereof.
      Lessee covenants and agrees that all repair or other work done by Lessee
      to the Leased Premises shall be performed in a good and workmanlike
      manner, using first quality materials, and in full compliance with plans
      and specifications approved by Lessor and all laws, rules, orders,
      ordinances, directions, regulations, and requirements of law or Lessors'
      insurance companies. Lessee shall pay all costs for such alterations,
      additions, and improvements including any alterations, additions, or
      improvements to the Leased Premises required by any governmental agency
      during the Term hereof. Lessee shall keep the Leased Premises free from
      any and all liens arising out of any work performed, materials furnished,
      or obligations incurred by Lessee. Lessee hereby indemnifies Lessor
      against liens, costs, damages, and expenses with respect to any such
      Lessee alteration, addition, or improvement. Unless otherwise agreed to in
      writing, all alterations, additions, and improvements to the Leased
      Premises by Lessor or Lessee shall become part of the Leased Premises and
      belong to Lessor and, at the end of the Term hereof,

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      shall remain on the Leased Premises without compensation of any kind to
      Lessee, except that any trade fixtures or personal property which are
      installed and paid for by Lessee shall remain the property of Lessee and
      may be removed by Lessee during the Term hereof, provided Lessee repairs
      any damage to the remaining improvements of the Leased Premises caused by
      the removal of such fixtures.

9.    Environmental Compliance by Lessee. Neither Lessee nor Lessee's agents
      shall cause or permit any Hazardous Materials (as hereinafter defined),
      other than janitorial supplies in reasonable quantities and supplies
      normal to light manufacturing which are used in accordance with
      manufacturer's instructions and applicable law, to be brought upon,
      stored, used, generated, released into the environment, or disposed of on,
      in, under, or about the Leased Premises, without the prior written consent
      of Lessor, which consent may be withheld in Lessor's reasonable
      discretion. Lessee shall comply with all local, state or federal rules,
      regulations or statutes concerning use, storage and disposal of any
      Hazardous Materials brought onto, used, or stored on the Leased Premises.
      Upon the expiration or sooner termination of this Lease, Lessee covenants
      to remove from the Leased Premises, at its sole cost and expense, any and
      all Hazardous Materials brought upon, stored, used, generated, or released
      into the environment by Lessee or Lessee's agents and still located on the
      Leased Premises. To the fullest extent permitted by law, each party hereto
      hereby agrees to indemnify, defend, protect, and hold harmless the other
      party and its agents, and respective successors and permitted assigns,
      from any and all claims, judgments, damages, penalties, fines, costs,
      liabilities, and losses (including, without limitation, loss, or
      restriction on use of rentable space or of any amenity of the Leased
      Premises and sums paid in settlement of claims, attorneys' fees,
      consultant fees, and expert fees) that arise during or after the Term
      hereof directly or indirectly from the presence of Hazardous Materials on,
      in, or about the Leased Premises which is or was caused or permitted by
      such indemnifying party or its agents during the Term hereof.

      As used in this Lease, the term "Hazardous Materials" shall mean and
      include any hazardous or toxic materials, substances, or wastes including
      (a) any materials, substances, or wastes that are toxic, ignitable,
      corrosive, or reactive and that are regulated by any local governmental
      authority, any agency of the state of Nebraska, or any agency of the
      United States government, (b) petroleum and petroleum-based products, (c)
      urea formaldehyde foam insulation, (d) polychlorinated biphenyls ("PCBs"),
      (e) freon and other chlorofluorocarbons and (f) asbestos and
      asbestos-containing materials.

10.   Lessor's Reserved Rights.

      a.    Entry by Lessor. Lessor and its agents and employees shall have the
            right to enter the Leased Premises at all reasonable times with
            reasonable notice to examine the same, and to make such maintenance,
            repairs, alterations, additions, and improvements to the Leased
            Premises as Lessors are obligated or may elect to make. Lessor shall
            take reasonable

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            precautions to minimize the disruption to Lessee of any entry to the
            Leased Premises by Lessor as provided in this Section.

      b.    Transfer by Lessor. Lessor may transfer or assign its interest in
            the Leased Premises and this Lease without the consent of Lessee, at
            any time and from time to time. The obligations of Lessor pursuant
            to this Lease shall be binding upon Lessor and its successors and
            assigns only during their respective periods of ownership.

      c.    Default by Lessor. Lessor shall not be liable to Lessee if Lessor is
            unable to fulfill any of its obligations under this Lease to the
            extent Lessor is prevented, delayed, or curtailed from so doing by
            reason of any cause beyond Lessor's reasonable control. Lessor shall
            not be in default unless Lessor fails to perform obligations
            required of Lessor within a reasonable time, but in no event later
            than thirty (30) days after written notice by Lessee to Lessor,
            specifying Lessor's failure to perform such obligation; provided,
            however, that if the nature of Lessor's obligation is such that more
            than thirty (30) days are reasonably required for performance, then
            Lessor shall not be in default if Lessor commences performance
            within such thirty (30) day period and thereafter diligently
            prosecutes its efforts to satisfy such obligation, Except as
            otherwise set forth herein, Lessee may not offset against any rent
            or other amount due from Lessee under this Lease any amount due or
            claimed to be due to Lessee from Lessor whether arising pursuant to
            this Lease or otherwise.

      d.    Subordination. This Lease may, at the option of Lessor, be
            subordinated to any ground or underlying leases, mortgages, deeds of
            trust or other liens which may hereafter affect the Leased Premises
            or any part thereof, and Lessee will execute and deliver upon the
            demand of Lessor from time to time any and all instruments
            reasonably desired by Lessor, effecting a subordination of this
            Lease in the mariner requested by Lessor to such lease, mortgage,
            deed of trust, or other lien, provided that in the event of the
            termination of such lease or foreclosure of such mortgage, deed of
            trust or lien, any successor to any interest of Lessor in the Leased
            Premises will not disturb Lessee's possession of the Leased Premises
            if Lessee attorns to such successor as Lessor and otherwise performs
            its obligations under this Lease. Lessee agrees to attorn to any
            landlord under any ground lease affecting the Leased Premises in the
            event of the termination or cancellation of such ground leases or to
            any purchaser upon foreclosure or sale pursuant to any lien.

      e.    Estoppel Certificate. Lessee shall upon ten (10) days written notice
            from Lessor execute, acknowledge, and deliver to Lessor a statement
            in writing (i) certifying that this Lease is unmodified and in full
            force and effect or, if modified, stating the nature of such
            modifications and certifying that this Lease, as so modified, is in
            full force and effect; (ii) acknowledging that there are not, to
            Lessee's knowledge, any uncured

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            defaults on the part of the Lessor hereunder or specifying such
            defaults if any are claimed; (iii) setting forth the Term hereof and
            setting forth any options of Lessee to extend or terminate the Term
            hereof, the nature of such options, and whether any such options
            have been exercised by Lessee; and (iv) stating the amount of the
            Monthly Rental and the Security Deposit. Any such statement may be
            relied upon by any then existing or prospective lessor, purchaser,
            or encumbrancer, and their successors and assigns, of all or any
            portion of the Leased Premises.

11.   Assignment, Subletting and Recapture.

      a.    Consent Required. Lessee shall not assign, sublease, or otherwise
            transfer, by operation of law or otherwise, this Lease or the Leased
            Premises or any interest herein or portion thereof without the prior
            written consent of Lessor, which consent may not be unreasonably
            withheld. Lessor may condition its consent to any assignment or
            sublease on the execution by such assignee or sublessee of a written
            assumption by such assignee or sublessee of the obligations of
            Lessee under this Lease and upon Lessor's determination that the
            proposed assignee or subtenant is financially responsible as a
            tenant and will conduct a business on the Leased Premises in
            compliance with all special permits, laws, ordinances, and
            regulations governing the Leased Premises.

      b.    No Release. Lessor's consent to any sale, assignment, encumbrance,
            subleasing, occupation, or other transfer shall not release Lessee
            from any of Lessee's obligations hereunder or be deemed to be a
            consent to any subsequent assignment, subleasing, or occupation
            unless Lessor so agrees in writing. The collection or acceptance of
            rent or other payment by Lessor from any person other than Lessee
            shall not be deemed the acceptance of any assignee or subtenant as
            the tenant hereunder or a release of Lessee from any obligation
            under this Loam.

12.   Destruction of Leased Premises. In the event of a total or partial
      destruction of the Leased Premises during the Term hereof, Lessor shall
      promptly and with all reasonable diligence (subject to strikes, lockouts,
      inability to procure material and labor in the free market, governmental
      restrictions, fire, the elements, and other extraordinary conditions
      beyond Lessee's reasonable control) repair the same in a good and
      workmanlike manner using first quality materials and otherwise to the
      reasonable satisfaction of Lessor, provided such repairs can reasonably be
      made within one hundred eighty (180) days under the laws and regulations
      of state, federal, county or municipal authorities, but such destruction
      shall in no way annul or void this Lease, except that the rent reserved to
      be paid hereunder shall be equitably adjusted according to the amount of
      space within the Leased Premises which is unusable for the operation of
      Lessee's business during the course of such renovations, If such repairs

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      cannot reasonably be made or are not completed within one hundred eighty
      (180) days, this Lease may be terminated at the option of Lessor.

13.   Condemnation. If the whole of the Leased Premises shall be taken or
      condemned by any competent authority for any public use or purpose, then
      this Lease shall terminate on the day prior to the taking of possession by
      such authority or on the day prior to the vesting of title in such
      authority, whichever first occurs, and rent hereunder shall be paid to and
      adjusted as of that day. If a portion of the Leased Premises shall be
      condemned or taken and, as a result thereof, there shall be such a major
      change in the character of the Leased Premises as to prevent Lessee from
      using the same in substantially the same manner as theretofore used, then
      in that event, Lessee may either cancel and terminate this Lease, as of
      the date when the part of the Leased Premises so taken or condemned shall
      be required for such public purpose, or Lessee may continue to occupy the
      remaining portion, provided, however, that Lessee shall give written
      notice to Lessor, within fifteen (15) days after the date of any taking or
      vesting of title, of its election. In the event Lessee shall remain in
      possession and occupation of the remaining portion, all the terms and
      conditions of this Lease shall remain in full force and effect with
      respect to such remaining portion, except that the rent reserved to be
      paid hereunder shall be equitably adjusted according to the amount and
      value of such remaining space; and provided further that Lessor shall, at
      Lessor's own expense, promptly and with all reasonable diligence (subject
      to strikes, lockouts, inability to procure material and labor in the free
      market, governmental restrictions, fire, the elements, and other
      extraordinary conditions beyond Lessor's reasonable control) do such work
      as to make a complete architectural unit of the remainder of the
      improvements located on the Leased Premises and this Lease shall continue
      for the balance of its terms, subject to the terms and conditions herein
      stated.

      The entire award of damages or compensation for the Leased Premises taken,
      or the amount paid pursuant to private purchase in lieu thereof, whether
      such condemnation or sale be total or partial, shall belong to and be the
      property of Lessor, and Lessee hereby assigns to Lessor any rights it may
      have at law or in equity to any and all such award or purchase price.
      Nothing herein contained shall be deemed or construed to prevent Lessee
      from interposing and prosecuting in any condemnation proceeding a claim
      for the value of any trade fixtures installed in the Leased Promises, and
      the cost, loss, or damages sustained by Lessee as the result of any
      alterations, modifications, or repairs which may be reasonable required of
      Lessee in order to place the remaining portion of the Leased Premises not
      so condemned in a suitable condition for Lessee's further occupancy.

14.   Default and Remedies.

      a.    Events of Default. The occurrence of any one or more of the
            following events shall constitute an "Event of Default": (i) the
            failure by Lessee to make any payment of

                                      -11-
<PAGE>   12
            rent or any other payments required to be made by Lessee under this
            Lease within ten (10) days of receipt of written notice from Lessor
            that such payment was not paid when due; (ii) the failure by Lessee
            to observe or perform any of the provisions of this Lease to be
            observed or performed by the Lessee if such failure continues for a
            period of thirty (30) days, or such other period if this Lease
            specifically provides a different period for a particular failure,
            after written notice by Lessor to Lessee of such failure; provided,
            however, that with respect to any failure which cannot reasonably be
            cured within thirty (30) days, an Event of Default shall not be
            considered to have occurred if Lessee commences to cure such failure
            within such thirty (30) day period and continues to proceed
            diligently with the cure of such failure; (iii) at Lessor's option,
            if Lessee abandons the Leased Premises; or (iv) the failure by
            Lessee to pay its obligations as they become due, the making of any
            general assignment or general arrangement for the benefit of
            creditors by Lessee, or the filing by or against Lessee of a
            petition to have Lessee adjudged a bankrupt or a petition for
            reorganization or arrangement under bankruptcy law or laws affecting
            creditor's rights unless, in the case of a petition filed against
            Lessee, such petition is dismissed within sixty (60) days.

      b.    Remedies. On the occurrence of an Event of Default, Lessors may at
            any time thereafter, with or without notice or demand and without
            limiting Lessor in the exercise of a right or remedy which Lessor
            may have by reason of such default or breach, exercise any rights or
            remedies Lessor may have at law or in equity, including, but not
            limited to, one or more of the following:

            i.    Declare the Lease at an end and terminated;

            ii.   Sue for the rent due and to become due under the Lease;

            iii.  Sue for any damages sustained by Lessor; and

            iv.   Continue the Lease in effect and relet Lessor's interest in
                  the Leased Premises on such terms and conditions as Lessor may
                  deem advisable, with Lessee remaining liable for the Monthly
                  Rental plus the reasonable cost of obtaining possession of the
                  Leased Premises, and of any repairs and alterations necessary
                  to prepare the Leased Premises for reletting, less the rentals
                  received from such reletting, if any.

No action by Lessor shall be construed as an election to terminate the Lease
unless written notice of such intention be given to Lessee by Lessor.

                                      -12-
<PAGE>   13
         c.       Late Charge. If Lessee fails to make any payment of rent,
                  expenses, or other amounts required of Lessee under this Lease
                  within five (5) days of the date such amount is due as set
                  forth in this Lease, then, in addition to any other amounts
                  recoverable by Lessor hereunder, Lessee shall pay Lessor a
                  late charge in an amount equal to ten percent (10%) of such
                  late rent, expenses or other amounts.

         d.       Non-Exclusive Remedies. The remedies of Lessor set forth in
                  this Section shall not be exclusive, but shall be cumulative
                  and in addition to all rights and remedies now or hereafter
                  provided or allowed by law or equity, including, but not
                  limited to, the right of Lessor to seek and obtain an
                  injunction and the right of Lessor to damages in addition to
                  those specified herein. Lessee hereby expressly waives any and
                  all rights of redemption granted by or under any present or
                  future law if Lessee is evicted or dispossessed for any cause
                  or if Lessor obtains possession of the Leased Premises by
                  reason of the breach by Lessee of any of its obligations under
                  this Lease.

15.      Contingency. This Lease is contingent upon Lessor entering into a Lease
         Termination Agreement with Lincoln Snack Company, a Division of Lincoln
         Foods Inc., a Delaware corporation ("Lincoln Snack"), pursuant to which
         the Lease Agreement dated November 16, 1992, by and between Lincoln
         Snack and Lessor shall be terminated and canceled as of July 31, 1997,
         and Lincoln Snack shall vacate the Leased Premises before the
         Commencement Date, on such terms and conditions as are reasonably
         acceptable to Lessor.

16.      Notices. All notices, requests, demands or other communications
         hereunder (including notices of all asserted actions, claims or
         demands) shall be given in writing and shall be deemed to have been
         duly delivered upon personal delivery to the other party, or
         twenty-four (24) hours after deposit with a reputable overnight courier
         service, or forty-eight (48) hours after deposit in the U. S. Mail,
         certified mail, return receipt requested, to the addressee at the
         address herein designated or at such other address as may be designated
         in writing by notice given in the manner provided herein.

                       If to Lessor:             John M. Campbell
                                                 President
                                                 Campbell Properties Corporation
                                                 3600 Hillside Circle
                                                 Lincoln, Nebraska 68506

                       If to Lessee:             Centurion International, Inc.
                                                 1901 Pioneers Boulevard
                                                 Lincoln Nebraska 68506
                                                 Attn: /s/ Gary Kuck

                                      -13-
<PAGE>   14
17.      Miscellaneous.

         a.       Holding Over. If Lessee, with or without Lessor's consent,
                  remains in possession of the Leased Premises, or any pad
                  thereof, after the expiration or termination of the Term
                  hereof, such occupancy shall, at Lessor's sole option, be a
                  tenancy from month to month upon all the provisions of this
                  Lease.

         b.       Performance. All payments to be made under this Lease shall be
                  made without prior legal notice or demand unless otherwise
                  provided herein. Time is hereby declared to be an essential
                  element to the performance of each and every one and all of
                  the terms, covenants, and conditions to be kept, observed, or
                  performed under this Lease.

         c.       Merger. There shall be no merger of this Lease or of the
                  leasehold estate hereby created with the fee estate in the
                  Leased Premises or any part thereof by mason of the fact that
                  the same person, firm, corporation, or other legal entity may
                  acquire or hold, directly or indirectly, this Lease or the
                  leasehold estate and the fee estate in the Leased Premises or
                  any interest in such fee estate without the prior written
                  consent of the holders of any mortgages or similar security
                  instruments covering the Leased Premises.

         d.       Termination. On termination of the Lease, Lessee shall execute
                  and deliver to Lessor immediately upon Lessor's request a
                  quitclaim deed in recordable form transferring to Lessor any
                  interest of Lessee in the Leased Premises.

         e.       Applicable Laws. This Lease shall be governed by and construed
                  in accordance with the laws of the State of Nebraska.

         f.       Headings. Headings of sections of this Lease are for
                  convenience of reference only and do not form a part hereof
                  and do not in any way modify, interpret or construe the
                  intentions of the parties.

         g.       Modification. This Lease contains all of the terms and
                  conditions agreed upon by the Lessor and Lessee with respect
                  to the Leased Premises. All prior negotiations,
                  correspondence, and agreements are superseded by this Lease
                  and any other contemporaneous documents. This Lease may not be
                  modified or changed except by written instrument signed by
                  Lessor and Lessee.

         h.       Relationship of Parties. Neither the method of computation of
                  rent nor any other provisions contained in this Lease nor any
                  acts of the parties shall be deemed or construed by the
                  parties or by any third person to create the relationship of
                  principal

                                      -14-
<PAGE>   15
                  and agent or of partnership or of joint venture or of any
                  association between Lessor and Lessee, other than the
                  relationship of landlord and tenant.

         i.       Waiver. The acceptance of rent or other payments by Lessor or
                  the endorsement or statement on any check or any letter
                  accompanying any check for rent or other payment shall not be
                  deemed an accord or satisfaction or a waiver of any obligation
                  of Lessee regardless of whether Lessor had knowledge of any
                  breach of such obligation. Failure to insist on compliance
                  with any of the terms, covenants, or conditions hereof shall
                  not be deemed a waiver of such terms, covenants, or
                  conditions, nor shall any waiver or relinquishment of any
                  right or power hereunder, at any one time or more times, be
                  deemed a waiver or relinquishment of such rights and powers at
                  any other time or times or under any other circumstance(s).

         j.       Severability. If any term or provision of this Lease or the
                  application thereof to any person or circumstances shall to
                  any extent be invalid or unenforceable, the remainder of this
                  Lease or the application of such term or provision to persons
                  or circumstances other than those as to which it is held
                  invalid or unenforceable shall not be affected thereby, and
                  each term and provision of this Lease shall be valid and
                  enforced to the fullest extent permitted by law.

         k.       Interpretations. Any uncertainty or ambiguity existing herein
                  shall not be interpreted against either party because such
                  party prepared any portion of this Lease, but shall be
                  interpreted according to the application of rules of
                  interpretation of contracts generally.

         l.       Successors and Assigns. This Lease shall be binding upon and
                  shall inure to the benefit of the parties hereto and their
                  respective permitted heirs, representatives, successors and
                  assigns.

         m.       Lessee as Corporation. Lessee and the persons executing this
                  Lease on behalf of Lessee represent and warrant that the
                  individuals executing this Lease on Lessee's behalf are duly
                  authorized to execute and deliver this Lease on its behalf in
                  accordance with a duly adopted resolution of the board of
                  directors of Lessee, and this Lease is binding upon Lessee in
                  accordance with its terms.

         n.       Security. Lessee shall be solely responsible for the security
                  of the Leased Premises and for the security of Lessee's
                  employees, agents, guests, and invitees on the Leased
                  Premises. Lessee shall be responsible to lock and secure all
                  doors, windows, and entrances to the Leased Premises and to
                  take any other reasonable security measures to protect persons
                  and property upon the Leased Premises.

                                      -15-
<PAGE>   16
         o.       Memorandum of Lease. Upon the request of Lessor or Lessee, the
                  parties shall execute a Memorandum of this Lease in recordable
                  form, describing the Commencement Date, the Term hereof, and
                  Lessee's option to renew.

         p.       Limitations and Lessor's Liability. Notwithstanding anything
                  to the contrary contained herein, in the event of any default
                  or breach by Lessor of any of the terms of this Lease, Lessee
                  shall look solely to Lessor's interest in the Leased Premises
                  for the collection of any judgment (or any other judicial
                  procedures requiring the payment of money by Lessor), and no
                  other property or assets of Lessor shall be subject to levy,
                  execution or other procedures for satisfaction of Lessee's
                  remedies.

         IN WITNESS WHEREOF, the parties hereto hereby execute this Lease as of
the day and year first above written.

                                               "LESSOR"

                                               CAMPBELL PROPERTIES CORPORATION,
                                               a Nebraska corporation

                                               By:       /s/ John M. Campbell
                                                    --------------------------
                                               John M. Campbell, President

                                               "LESSEE"

                                               CENTURION INTERNATIONAL, INC.,
                                               a Nebraska corporation

                                               By:       /s/ Gary L. Kuck
                                                    --------------------------
                                               Name:    Gary L. Kuck
                                                    --------------------------
                                               Title:   President
                                                    --------------------------

                                      -16-
<PAGE>   17
STATE OF NEBRASKA          )
                           )  ss.
COUNTY OF LANCASTER        )

         The foregoing was executed before me this 25th day of July, 1997, by
John M. Campbell, President of Campbell Properties Corporation, a Nebraska
corporation, on behalf of the corporation.

                                                        /s/ Susan McCrory
                                                        -----------------------
                                                        Notary Public

STATE OF NEBRASKA          )
                           )  ss.
COUNTY OF LANCASTER        )

         The foregoing was executed before me this 15th day of July, 1997, by
Gary L. Kuck of Centurion International, Inc., a Nebraska corporation, on behalf
of the corporation.

                                                        /s/ Richard W. Kiolbasa
                                                        -----------------------
                                                        Notary Public

                                      -17-<PAGE>   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 Boulevard Lease

Dear Mr. Kuck:

This letter is to confirm the verbal extension of your lease at 1901 Pioneers
Boulevard, Lincoln, Nebraska 68502 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,

CAMPBELL PROPERTIES CORPORATION

 /s/ John M. Campbell
By:  John M. Campbell
Its:  President

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

CENTURION INTERNATIONAL, INC.

 /s/ Gary L. Kuck
By: Gary L. Kuck
Its:  President & CEO

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