LEASE ADDENDUM NO. 1

     This Addendum to Lease is entered into by and between BROADWATER
INVESTMENTS II, a Virginia partnership ("Landlord"), and SYCONET.COM, INC.
("Tenant"), who are the parties to a certain lease agreement ("Lease") dated
March 1 , 2000. The terms and conditions contained in this Lease Addendum shall
become part of the aforementioned lease and fully incorporated therein.

ARTICLE 28.  OPTION TO PURCHASE.

     Lessor grants to Tenant the option to purchase the Demised Premises and any
additional buildings then constructed on the land parcel currently owned by
Broadwater Investments II upon which the Demised Premises is situated more
particularly described as: Lot 1A, Central Park Business and Industrial Center,
containing 3.1 acres, more or less, during the Initial Term of this Lease. The
afore-described land parcel shall be referred to herein as the "Project Site".

     28.1 General Terms. Tenant shall exercise the option to purchase by
notifying Landlord in writing not less than 120 days prior to the day upon which
Tenant desires to acquire title to the Project Site, which notice shall be given
to Broadwater Investments II in accordance with the provisions of the Lease, and
based upon the following conditions, to wit:

     28.1.1. That Tenant agrees to purchase the Demised Premises and all
additional buildings constructed during the term of this Lease, and this
purchase option shall extend to the entire square footage of buildings thereon
at the time this option is exercised. The proposed building plan shows that
approximately 32,520 square feet of building area, including the Demised
Premises, will be completed on the Project Site.

     28.1.2. Tenant agrees that this Option shall terminate at the end of the
Initial Term of the Lease. Landlord and Tenant contemplate that a new Option to
Purchase may be desirable and that said new Option to Purchase shall be made in
a separate written instrument on or before the commencement of the First Renewal
Term.

     28.1.3. The purchase price shall be those sums stipulated below so long as
the Landlord receives Tenant's notice to exercise the purchase option by the
anniversary dates stated, to-wit:


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       (i)    On or before the first anniversary date of the Commencement Date,
              $3,550,000.00;

       (ii)   On or before the second anniversary date of the Commencement Date,
              $3,660,000.00;

       (iii)  On or before the third anniversary of the Commencement Date,
              $3,770,000.00;

       (iv)   On or before the fourth anniversary of the Commencement Date,
              $3,880,000.00;

       (v)    On or before the fifth anniversary date (subject to the limitation
              in Article 28.1), $3,990,000.00.

     28.1.4. The Lease shall not have been terminated previously.

     28.1.5. Tenant shall have observed and complied with all material terms and
conditions of the Lease required of Tenant, up to the time of the exercise of
this option and the payment of the purchase price, in the manner provided.

     28.2. Landlord Duties. Landlord shall convey the Demised Premises to Tenant
on the date specified in Tenant's notice of exercise of the option, and
additional lands contained within the Project Site and buildings thereon, by
general warranty deed, free and clear of all liens and encumbrances (exclusive
of easements held by the City of Manassas for any utility purpose now held or
hereafter acquired), except those that Tenant may have created or suffered. The
deed shall be accompanied by an abstract of title, showing good and unencumbered
title, passing under and by the resulting conveyance. Landlord will be
responsible for payment of the Grantor's Tax pursuant to ss.58.1- 802 of the
Code of Virginia (as amended).

     28.3. Purchase Price Reduction. The total purchase price Tenant must pay
upon acquisition of the Project Site shall be reduced by a sum equivalent to 33%
of rent paid by Tenant on the Demised Premises only during the Initial Term of
this Lease. The parties understand and agree that the purchase price reduction
shall pertain only to those rents paid by Tenant pursuant to this Lease on the
Demised Premises, and do not pertain to any additional buildings which may
become subject to a separate lease agreement between the parties after the date
of execution of this Lease.


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     28.3.1. In the event that the Tenant fails to exercise the option to
purchase the Demised Premises and additional lands and buildings contained in
the Project Site and the term of this Lease expires, all annual rent paid by the
Tenant during the term of the Lease shall be considered rent and the Landlord
shall be entitled to retain the entire amount without any accounting to Tenant.

     28.4 Miscellaneous Terms. In the event that Tenant exercises this option in
accordance with the terms and conditions contained in this addendum prior to the
expiration of the Lease, the parties agree that the Tenant will reimburse at the
closing of title to Landlord any and all prepayment penalties incurred by
Landlord under the terms of Landlord's existing deed of trust or mortgage
encumbering the Project Site requiring the payment of same for the prepayment of
the encumbering debt obligation provided that, Tenant shall not become liable to
reimburse Landlord for prepayment penalties in excess of the sum of $25,000.00.
In the event that Tenant exercises this option to purchase, a closing of title
shall occur at the office of Tenant's lender, attorney, or lender's attorney at
the date specified in Tenant's notice to Landlord but in no event shall the
closing take place within thirty (30) days of the date of Landlord's receipt of
such notice. A closing of title shall be extended for a reasonable time to cure
any title defects.


                                            BROADWATER INVESTMENTS II,
                                            a partnership

DATED: 3/1/00                               BY: /s/ David L. Broadwater
                                                -----------------------
                                            NAME: David L. Broadwater
                                            TITLE: General Partner

                                            SYCONET.COM, INC.

DATED: 3/3/00                               BY: /s/ Kathryn T. Jacobson
                                                --------------------------
                                            NAME: Kathryn T. Jacobson
                                            TITLE: Chief Financial Officer
ATTEST:


/s/ Jack P. Kelly
-----------------------
Name: Jack P. Kelly



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