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from S-4 1 page State of Delaware Secretary of State Division of Corporations Delivered 06:34 Pm 01/03/2017 Filed 06:34 Pm 01/03/2017 State of Delaware Sr 20170027001 - File Number 3444444 Certificate of Merger of Foreign Corporation Into a Domestic Corporation

from S-4 10 pages Limited Liability Company Agreement of Enlighten It Consulting LLC a Maryland Limited Liability Company

from S-4 13 pages Bylaws of Alion Science and Technology Corporation

from S-4 5 pages Articles of Incorporation or Bylaws

from S-4 10 pages Third Amended Regulations of Macaulay-Brown, Inc

from S-4 6 pages Articles of Incorporation or Bylaws

from S-4 6 pages Articles of Incorporation or Bylaws

from S-4 6 pages Articles of Incorporation or Bylaws

from S-4 3 pages Articles of Conversion of Enlighten It Consulting Inc. a Maryland Corporation Into Enlighten It Consulting LLC a Maryland Limited Liability Company (Pursuant to the Section 3-901 Et Seq. of the Maryland General Corporation Code) [Remainder of Page Intentionally Left Blank] Articles of Organization Of

from S-4 19 pages Articles of Incorporation for a Stock Corporation

from S-4 8 pages Limited Liability Company Operating Agreement of Commonwealth Technology Innovation LLC

from S-4 3 pages See Instructions on the Reverse

from S-4 14 pages Amended and Restated Articles of Incorporation of Commonwealth Technology, Incorporated Article 1 Name

from S-4 8 pages Commonwealth Technology LLC

from S-4 1 page State of Delaware Secretary of State Division of Corporations Delivered 06:43 Pm 01/03/2017 Filed 06:43 Pm 01/03/2017 Sr 20170027012 - File Number 3444444 State of Delaware Certificate of Merger of Foreign Corporation Into a Domestic Corporation Pursuant to Title 8, Section 252 of the Delaware General Corporation Law, the Undersigned Corporation Executed the Following Certificate of Merger: First: The Name of the Surviving Corporation Is Alion Science and Technology Corporation (“Surviving Corporation”), a Delaware Corporation, and the Name of the Wholly-Owned Subsidiary Being Merged Into This Surviving Corporation Is Alion – Meti Corporation (“Subsidiary”), a Virginia Corporation. Second: The Agreement of Merger Has Been Approved, Adopted, Certified, Executed and Acknowledged by the Surviving Corporation and Subsidiary Pursuant to Title 8 Section 252 of the General Corporation Law of the State of Delaware. Third: The Name of the Surviving Corporation Is Alion Science and Technology Corporation, a Delaware Corporation. Fourth: The Certificate of Incorporation of Surviving Corporation, as Now in Force and Effect, Shall Continue to Be the Certificate of Incorporation of the Surviving Corporation. Fifth: The Surviving Corporation Owns All of the 100 Outstanding Shares of Capital Stock Par Value $1.00 of the Merger Subsidiary

from S-4 1 page State of Delaware Secretary of State Division of Corporations Delivered 06:40 Pm 01/03/2017 Filed 06:40 Pm 01/03/2017 Sr 20170027008 - File Number 3444444 State of Delaware Certificate of Merger of Foreign Corporation Into a Domestic Corporation Pursuant to Title 8, Section 252 of the Delaware General Corporation Law, the Undersigned Corporation Executed the Following Certificate of Merger: First: The Name of the Surviving Corporation Is Alion Science and Technology Corporation (“Surviving Corporation”), a Delaware Corporation, and the Name of the Wholly-Owned Subsidiary Being Merged Into This Surviving Corporation Is Washington Consulting, Inc. (“Subsidiary”), a Virginia Corporation. Second: The Agreement of Merger Has Been Approved, Adopted, Certified, Executed and Acknowledged by the Surviving Corporation and Subsidiary Pursuant to Title 8 Section 252 of the General Corporation Law of the State of Delaware. Third: The Name of the Surviving Corporation Is Alion Science and Technology Corporation, a Delaware Corporation. Fourth: The Certificate of Incorporation of Surviving Corporation, as Now in Force and Effect, Shall Continue to Be the Certificate of Incorporation of the Surviving Corporation. Fifth: The Surviving Corporation Owns All of the 10,100 Outstanding Shares of Capital Stock With No Par Value of the Merger Subsidiary

from S-4 1 page State of Delaware Secretary of State Division of Corporations Delivered 06:38 Pm 01/03/2017 Filed 06:38 Pm 01/03/2017 Sr 20170027003 - File Number 3444444 State of Delaware Certificate of Merger of Foreign Corporation Into a Domestic Corporation Pursuant to Title 8, Section 252 of the Delaware General Corporation Law, the Undersigned Corporation Executed the Following Certificate of Merger

from S-4 1 page State of Delaware Secretary of State Division of Corporations Delivered 06:32 Pm 01/03/2017 Filed 06:32 Pm 01/03/2017 Sr 20170026998 - File Number 3444444 State of Delaware Certificate of Merger of Foreign Corporation Into a Domestic Corporation Pursuant to Title 8, Section 252 of the Delaware General Corporation Law, the Undersigned Corporation Executed the Following Certificate of Merger: First: The Name of the Surviving Corporation Is Alion Science and Technology Corporation (“Surviving Corporation”), a Delaware Corporation, and the Name of the Wholly-Owned Subsidiary Being Merged Into This Surviving Corporation Is Alion – MA&D Corporation (“Subsidiary”), a Colorado Corporation. Second: The Agreement of Merger Has Been Approved, Adopted, Certified, Executed and Acknowledged by the Surviving Corporation and Subsidiary Pursuant to Title 8 Section 252 of the General Corporation Law of the State of Delaware. Third: The Name of the Surviving Corporation Is Alion Science and Technology Corporation, a Delaware Corporation. Fourth: The Certificate of Incorporation of Surviving Corporation, as Now in Force and Effect, Shall Continue to Be the Certificate of Incorporation of the Surviving Corporation. Fifth: The Surviving Corporation Owns All of the 1,050 Outstanding Shares of Capital Stock Par Value $0.01 of the Merger Subsidiary

from S-4 1 page State of Delaware Secretary of State Division of Corporations Delivered 06:30 Pm 01/03/2017 Filed 06:30 Pm 01/03/2017 Sr 20170026997 - File Number 3444444 State of Delaware Certificate of Merger of Foreign Corporation Into a Domestic Corporation Pursuant to Title 8, Section 252 of the Delaware General Corporation Law, the Undersigned Corporation Executed the Following Certificate of Merger: First: The Name of the Surviving Corporation Is Alion Science and Technology Corporation (“Surviving Corporation”). a Delaware Corporation, and the Name of the Wholly-Owned Subsidiary Being Merged Into This Surviving Corporation Is Alion – Cati Corporation (“Subsidiary”), a California Corporation. Second: The Agreement of Merger Has Been Approved, Adopted, Certified, Executed and Acknowledged by the Surviving Corporation and Subsidiary Pursuant to Title 8 Section 252 of the General Corporation Law of the State of Delaware. Third: The Name of the Surviving Corporation Is Alion Science and Technology Corporation, a Delaware Corporation. Fourth: The Certificate of Incorporation of Surviving Corporation, as Now in Force and Effect, Shall Continue to Be the Certificate of Incorporation of the Surviving Corporation. Fifth: The Surviving Corporation Owns All of the 100 Outstanding Shares of Capital Stock Par Value $0.10 of the Merger Subsidiary

from S-4 1 page State of Delaware Secretary of State Division of Corporations Delivered 06:28 Pm 01/03/2017 Filed 06:28 Pm 01/03/2017 Sr 20170026995 - File Number 3444444 State of Delaware Certificate of Merger of Foreign Corporation Into a Domestic Corporation Pursuant to Title 8, Section 252 of the Delaware General Corporation Law, the Undersigned Corporation Executed the Following Certificate of Merger: First: The Name of the Surviving Corporation Is Alion Science and Technology Corporation (“Surviving Corporation”), a Delaware Corporation, and the Name of the Wholly-Owned Subsidiary Being Merged Into This Surviving Corporation Is Alion – Bmh Corporation (“Subsidiary”), a Virginia Corporation. Second: The Agreement of Merger Has Been Approved, Adopted, Certified, Executed and Acknowledged by the Surviving Corporation and Subsidiary Pursuant to Title 8 Section 252 of the General Corporation Law of the State of Delaware. Third: The Name of the Surviving Corporation Is Alion Science and Technology Corporation, a Delaware Corporation. Fourth: The Certificate of Incorporation of Surviving Corporation, as Now in Force and Effect, Shall Continue to Be the Certificate of Incorporation of the Surviving Corporation. Fifth: The Surviving Corporation Owns All of the 1,000 Outstanding Shares of Capital Stock With No Par Value of the Subsidiary