Exhibit 3.1

AMENDED AND RESTATED

CERTIFICATE OF INCORPORATION

OF

DRS TECHNOLOGIES, INC.

The undersigned, being the Chairman and Chief Executive Officer of DRS Technologies, Inc., a corporation existing under the laws of the State of Delaware, hereby certifies as follows:

The original Certificate of Incorporation of DRS Technologies, Inc. (the “Corporation”) was filed with the Secretary of State of the State of Delaware on November 8, 1968 under the name Diagnostic/Retrieval Systems, Inc. This Amended and Restated Certificate of Incorporation restates, integrates and further amends the provisions of the Restated Certificate of Incorporation of the Corporation.

This Amended and Restated Certificate of Incorporation has been duly adopted, all in accordance with the provisions of Sections 242 and 245 of the Delaware General Corporation Law.

The text of the Certificate of Incorporation of the Corporation is hereby amended and restated in its entirety to read as follows:

FIRST: The name of this corporation is DRS Technologies, Inc.

SECOND: The address, including street, number, city and county of the registered office of the Corporation in the State of Delaware is 2711 Centerville Road, Suite 400, Wilmington, County of New Castle; and the name of the registered agent of the Corporation in the State of Delaware at such address is Corporation Service Company.

THIRD: The purpose of the Corporation is to engage in any lawful act or activity for which a Corporation may be organized under the Delaware General Corporation Law.

FOURTH: The Corporation shall be authorized to issue l 00 shares of capital stock, consisting of I00 shares of Common Stock, par value $0.0I per share (the “Common Stock”).

FIFTH: No director shall be personally liable to the Corporation or its stockholders for monetary damages for any breach of fiduciary duty by such director as a director. Notwithstanding the foregoing sentence, a director shall be liable to the extent provided by applicable law (i) for breach of the director’s duty of loyalty to the Corporation or its stockholders, (ii) for acts or omissions not in good faith or which involve intentional misconduct or a knowing violation of law, (iii) pursuant to Section 174 of the Delaware General Corporation Law, or (iv) for any transaction from which the director derived an improper personal benefit. No amendment to or repeal of this Article shall apply to or have any effect on the liability or alleged liability of any director of the Corporation for or with respect to any acts or omissions of such director occurring prior to such amendment.

SIXTH: (a) The Corporation shall have power to indemnify any person who was or is a party or is threatened to be made a party to any threatened, pending or completed action, suit or proceeding, whether civil, criminal, administrative or investigative (other than an action by or in the right of the Corporation) by reason of the fact that he is or was a director, officer, employee or agent of the Corporation, or is or was serving at the request of the Corporation as a director, officer, employee or agent of another corporation, partnership, joint venture, trust or other enterprise, against expenses (including attorneys’ fees), judgments, fines and amounts paid in settlement actually and reasonably incurred by him in connection with such action, suit or proceeding if he acted in good faith and in a manner he reasonably believed to be in, or not opposed to, the best interests of the Corporation, and, with respect to any criminal action or proceeding, had no reasonable cause to believe his conduct was unlawful. The termination of any action, suit or proceeding by judgment, order, settlement, conviction, or upon a plea of nolo contendere or its equivalent, shall not, of itself, create an assumption that the person did not act in good faith and in a manner which he reasonably believed to be in, or not opposed to, the best interests of the Corporation, and, with respect to any criminal action or proceeding, had reasonable cause to believe that his conduct was unlawful.

(b)    The Corporation shall have power to indemnify any person who was or is a party or is threatened to be made a party to any threatened, pending or completed action or suit by or in the right of the Corporation to procure a judgment in its favor by reason of the fact that he is or was a director, officer, employee or agent of the Corporation, or is or was serving at the request of the Corporation as a director, officer, employee or agent of another corporation, partnership, joint venture, trust or other enterprise against expenses (including attorneys’ fees) actually and reasonably incurred by him in connection with the defense or settlement of such action or suit if he acted in good faith and in a manner he reasonably believed to be in, or not opposed to, the best interests of the Corporation and except that no indemnification shall be made in respect of any claim, issue or matter as to which such person shall have been adjudged to be liable for negligence or misconduct in the performance of his duty to the Corporation unless, and only to the extent that, the Court of Chancery or the court in which such action or suit was brought shall determine upon application that, despite the adjudication of liability but in view of all the circumstances of the case, such person is fairly and reasonably entitled to indemnity for such expenses which the Court of Chancery or such other court shall deem proper.

(c)    To the extent that a director, officer, employee or agent of the Corporation has been successful on the merits or otherwise in defense of any action, suit or proceeding referred to in paragraphs (a) and (b), or in defense of any claim, issue or matter therein, he shall be indemnified against expenses (including attorneys’ fees) actually and reasonably incurred by him in connection therewith.

(d)    Any indemnification under paragraphs (a) and (b) (unless ordered by a court) shall be made by the Corporation only as authorized in the specific case upon a determination that indemnification of the director, officer, employee or agent is proper in the circumstances because he has met the applicable standard of conduct set forth in paragraphs{a) and (b). Such determination shall be made (I) by the Board of Directors by a majority vote of a quorum consisting of directors who were not parties to such action, suit or proceeding, or (2) if such a

quorum is not obtainable, or, even if obtainable a quorum of disinterested directors so directs, by independent legal counsel in a written opinion, or (3) by the stockholders.

(e)    Expenses incurred in defending a civil or criminal action, suit or proceeding may be paid by the Corporation in advance of the final disposition of such action, suit or proceeding as authorized by the Board of Directors in the specific case upon receipt of any undertaking by or on behalf of the director, officer, employee or agent to repay such amount unless it shall ultimately be determined that he is entitled to be indemnified by the Corporation as authorized in this Article.

(f)    The indemnification provided by this Article shall not be deemed exclusive of any other rights to which those seeking indemnification may be entitled under any By-Law, agreement, vote of stockholders or disinterested directors or otherwise, both as to action in his official capacity and as to action in another capacity while holding such office, and shall continue as to a person who has ceased to be a director, officer, employee or agent and shall inure to the benefit of the heirs, executors and administrators of such a person.

(g)    The Corporation shall have power to purchase and maintain insurance on behalf of any person who is or was a director, officer, employee or agent of the Corporation, or is or was serving at the request of the Corporation as a director, officer, employee or agent of another corporation, partnership, joint venture, trust or other enterprise against any liability asserted against him and incurred by him in any such capacity or arising out of his status as such, whether or not the Corporation would have the power to indemnify him against such liability under the provisions of this Article.

SEVENTH: The Corporation shall have perpetual existence.

IN WITNESS WHEREOF, the undersigned has duly executed this certificate on behalf of the Corporation this 17th day of July, 2009.

/s/ Mark S. Newman

Mark S. Newman

Chairman and Chief

Executive Officer

CERTIFICATE OF AMENDMENT TO THE

AMENDED AND RESTATED CERTIFICATE OF INCORPORATION

OF

DRS TECHNOLOGIES, INC.

(Pursuant to Section 242 of the General Corporation Law of the State of Delaware)

DRS Technologies, Inc., a corporation organized under the General Corporation Law of the State of Delaware (the “Corporation”), hereby certifies as follows:

1.    Article FIRST of the Amended and Restated Certificate of Incorporation of the Corporation is hereby amended by striking out Article FIRST and inserting in lieu thereof the following:

“FIRST:    The name of this corporation is Leonardo DRS, Inc.”

2.    The foregoing amendment has been adopted in accordance with the provisions of Section 242 of the Delaware General Corporation Law and the Corporation’s governance documents.

IN WITNESS WHEREOF, this Certificate of Amendment has been duly executed this 18th day of July.

/s/ William J. Lynn III

Name: William J. Lynn III

Title: President and Chief Executive

Officer