THIRD AMENDMENT TO OFFIC E LEASE AGREEMENT

A. A predecessor-in-interest of Landlord and Tenant entered into a certain lease (the "Original Lease") with a lease reference date of August 2, 2004, as amended by Lease Amendment No. 1 dated December l , 2004 (the "First Amendment"), and as amended by Lease Amendment No . 2 dated October 20, 2005 (the "Second Amendment") (the Original  Lease, the First Amendment, Second Amendment and this Amendment are hereinafter collectively referred to as the "Lease"), for a Term that expires October 31 , 2015;

B. Tenant currently occupies 88,035 rentable square feet (the "Existing Premises")  being Suites 200, 300 & 400 located in the building commonly known as Las Colinas Highlands with a street address of 6191 N. State Highway 16 l , Irving Texas 75038 as further described in the Lease (the "Building").   No subtenants currently occupy or have ever occupied the Existing Premises.

2. Expansion of Premises . Effective January I, 2009 (the "Expansion Effective Date"), the term "Premise s" shall mean both the Existing Premises and those certain premises agreed to consist of 1,787 rentable square feet, located in Suite 150 of the Building, as depicted on- Exhibit A hereto (the "Expansion Premises"), for a total of 89,822 Rentable Square Feet, regardless of when Landlord 's Work is substantially completed .   Tenant 's Proport ionate Share shall be 44.87%, which  is the quotient

3. Base Rental.   Commencing  on the Expansion  Effective Date, Annaul  Rent  for the Expansion Premises shall be paid in Monthly Installment s as follows:

4. Base Year. From and after the Expansion Effective Date, the Base Year for the Expansion Premises only shall be:

5. Premises .  Tenant accepts the Expansion Premises in "AS IS", "WITH ALL FAULTS" condition as of the date of this Amendment. Landlord has no responsibility to make any alterations or improvements to the Expansion Premises, except as expressly set forth in Exhibit B to this Amendment. Tenant specifically acknowledges that Landlord has made no representations or warranties whatsoever concerning the condition of any aspect of the Expansion Premises and the Building, or the present or future suitability for Tenant's use, and Tenant waives all implied warranties.

6. Parking. The following provision is hereby added to Article 30 of the Original Lease:

7. Taxes. Article 4.1 .3 of the Original Lease is hereby modified, solely with respect to the Expansion Premises, commencing on the Expansion Effective Date, to include as a part of "Taxes" all taxes levied in substitution or replacement for real estate taxes, and all taxes (including the ' margin' tax, but not state or federal net income tax) now or hereafter imposed upon rents or other revenues of Landlord attributable to the Property.

8. Indemnification. Solely in order to cause Article 10 of the Original Lease to comply with the "Fair Notice" and ·”Express Negligence" requirements of Texas law, and not intending  to make any substantive change, Article 10 of the Original Lease is hereby modified by inserting, at the end of the first

1. This Work Letter shall set forth the obligations of Landlord and Tenant with respect  to  the preparat ion of the Expansion Premises for Tenant's occupancy. All improvements described in this Work Letter to be constructed in and upon the Expansion Premises by Landlord are hereinafter referred to as the "Landlord's Work." Landlord and Tenant acknowledge that Plans (hereinafter defined) for the Landlord's Work have not yet been prepared and, therefore, it is impossible to determine the exact cost of the Landlord's Work at this time. Accordingly, Landlord and Tenant agree that Landlord's obligation to pay for the cost of Landlord 's Work shall be limited to $35,418.44 (the "Construction Allowance") and that Tenant shall be responsible for the reasonable cost of Landlord' s Work to the extent that it exceeds the Construction Allowance, as provided in this Work Letter. If the actual cost of Landlord's Work is less than the Construction Allowance,  Tenant shall not be entitled to any credit, payment or abatement on account thereof. Landlord shall enter into a direct contract for Landlord's Work with a properly licensed general contractor selected by Landlord. In addition, Landlord shall have  the  right  to  select  and/or approve of any subcontractors used in connection with the Landlord's Work. Tenant shall pay Landlord, within ten (I 0) days after receipt of Landlord's written demand therefor, a construction fee equal to 3% of the Construct ion Allowance to compensate for its construction management services in connection with Landlord's Work. Landlord reserves the right to deduct such fee from the Construction Allowance. The Construction Allowance must be used within six (6) months after the Expansion  Effective Date or any remaining portion shall be forfeited by Tenant.

2. Space planning, architectural and engineering (mechanical, electrical and plumbing) drawings for the Landlord's Work shall be prepared at Tenant's sole cost and expense, subject to funding through the Construction Allowance. The space planning, architectural and mechanical drawings are collectively referred to herein as the "Plans".

3. Tenant shall deliver to Landlord any information reasonably requested by Landlord and shall deliver to Landlord Tenant's approval or disapproval of any  preliminary  or  final  layout,  drawings,  or plans prompt ly after receipt of written request therefor. Any disapproval shall be in writing and shall set forth in reasonable detail the reasons for such disapproval. Tenant and Landlord's Architect shall use commercially reasonable efforts to devote such time in consultation with Landlord  and  Landlord's engineer as may reasonably be required to provide all information reasonably necessary in order to enable Landlord's Architect and engineer to promptly complete,  and  obtain Tenant's written  approval  of, the Plans for Landlord's Work. Tenant acknowledges that the Expansion Effective Date is a fixed date, regardless of whether or not Landlord's Work in the Expansion Premises  has been  completed.  Both parties agree to work together i n  good faith to the end that Landlord's Work may commence and be substant ially completed as promptl y as possible, but a failure to so complete shall not be a default or Event of Default for either party. Tenant acknowledges that Landlord 's Work will be conducted during business hours, and agrees that no interference with Tenant's business or inconvenience to Tenant shall be a default by Landlord or constitute a constructive evict ion of Tenant. Landlord agrees to use  its commercia lly reasonable efforts to minimize inconvenience and interference. Neither the approva l of the Plans nor the supervision of Landlord 's Work by Landlord shall constitute a representation or warranty by Landlord as to the accuracy, adequacy, sufficiency and propriety  of the Plans or  the  quality  of workman ship or compliance of Landlord's Work with applicable law.

4. Prior to commencing any construct ion of Landlord's Work, Landlord shall submit to Tenant a written estimate sett ing forth the ant icipated cost of the Landlord 's Work, including but not limited to labor and material s, architect' s fees, contractor's fees and permit fees. Promptly thereafter , Tenant sha ll either notify Landlord in writing of its approval of the cost estimate, or specify its objections thereto in

5. If Landlord 's estimate which is approved by Tenant shall exceed the maximum Construction Allowance (such excess being herein referred to as the "Excess Costs"), Tenant shall pay to Landlord such Excess Costs within five (5) Business Days after receipt of Landlord's written demand therefor. Landlord shall not be required to proceed with Landlord 's Work until Tenant pays such Excess Costs. Excess Costs constitute Rent payable pursuant to the Lease, and the failure to timely pay same constitutes an Event of Defau lt under the Lease.

6. If Tenant shall request any changes to Landlord 's Work that are approved by Landlord ("Change Orders"), Landlord shall have any necessary revisions to the Plans prepared, and Tenant shall reimburse Landlord on demand for the cost of preparing such revisions. Landlord shall notify Tenant in writing of the estimated increased cost, if any, which will be chargeable to Tenant by reason of such Change Orders, which increased cost shall be deemed Excess Costs hereunder and shall be subject to the provisions of Para2:raph 5 above. Tenant shall, within two (2) Business Days after receiving Landlord's estimate of the cost of the Change Order, notify Landlord in writing whether it desires to proceed with such Change Order. In the absence of such written authorization , Landlord shall have the option to continue work on the Expansion Premises disregarding the requested Change Order, or Landlord may elect to discontinue work on the Expansion Premises until it receives notice of Tenant's decision.

7. Following approval of the Plans and the payment by Tenant of the required portion of the Excess Costs, if any, Landlord shall cause Landlord's Work to be constructed substantially  in accordance with the approved Plans, so long as no default (beyond any applicable notice and cure period) shall occur under the Lease. Landlord shall notify Tenant upon substantial completion of Landlord's  Work.  The phrase "substantial completion" shall mean that Landlord's Work has been completed  except  for such minor "punch list" items as would not materially interfere with the use of all or any portion of the Expansion Premises for the permitted use outlined in Section  I . I of the Original Lease.

8. This Work Letter shall only be applicable to the Expansion Premises and shall not be deemed applicable to any add itional space added to the Expansion Premises at any time or from time to time, whether by any options under the Lease or otherwise, or to any portion  of  the  original  Expansion Premises or any additions to the Premises in the event of a renewal or extension of the original Lease Term, whether by any options under the Lease or otherwise, unless expressly so provided in the Lease or any amendment or supplement to the Lease. All capitalized terms used in this Work Letter but not defined herein shall have the same meanings ascribed to such terms in the Lease.