UNITED STATES
                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C.  20549
                                SCHEDULE 13D
                                (Rule 13d-101)
                   Under the Securities Exchange Act of 1934
                           (Amendment No.         )*
                                          --------

                            Litton Industries, Inc.
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                               (Name of Issuer)
       Series B $2 Cumulative Preferred Stock, par value $5.00 per share
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                        (Title of Class of Securities)

                                  538021 40 3
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                                (CUSIP Number)
                                W. Burks Terry
                 Corporate Vice President and General Counsel
                         Northrop Grumman Corporation
                             (formerly NNG, Inc.)
                            1840 Century Park East
                             Los Angeles, CA 90067
                                (310) 553-6262
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          (Name, Address and Telephone Number of Person Authorized to
                      Receive Notices and Communications)
                                 April 3, 2001
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            (Date of Event which Requires Filing of this Statement)
       If the filing person has previously filed a statement on Schedule 13G to
       report the acquisition that is the subject of this schedule 13D, and is
       filing this schedule because of (S)(S) 240.13d-1(3), 240.13d-1(f) or
       240.13d-1(g), check the following box. [_]


Note:  Schedules filed in paper format shall include a signed original and five
copies of the schedule, including all exhibits. See Rule 13d-7 for other parties
to whom copies are to be sent.

       *The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class of
securities, and for any subsequent amendment containing information which would
alter disclosures provided in a prior cover page.

       The information required on the remainder of this cover page shall not be
deemed to be "filed" for the purpose of Section 18 of the Securities Exchange
Act of 1934 ("Act") or otherwise subject to the liabilities of that section of
the Act but shall be subject to all other provisions of the Act (however, see
the Notes).


                              (Page 1 of 9 Pages)




 CUSIP No. 538021 40 3                13D                    Page 2 of 9 Pages
         
    1.      Name Of Reporting Person
            I.R.S. Identification Nos. Of Above Persons (Entities Only)

            Northrop Grumman Corporation (formerly NNG, Inc.)
            95-4840775
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   2.       Check The Appropriate Box If A Member Of A Group*
                  (a)
                  (b)
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   3.       SEC Use Only
--------------------------------------------------------------------------------
   4.       Source of Funds (See Instructions)        BK, OO
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   5.       Check if Disclosure of Legal Proceedings Is Required Pursuant to
            Items 2(d) or 2(e)
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   6.       Citizenship or Place of      Delaware
            Organization                 ---------------------------------------
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       Number of          7.   Sole Voting Power
      Shares Bene-      --------------------------------------------------------
        ficially          8.   Shared Voting Power                  240,632
     Owned by Each      --------------------------------------------------------
       Reporting          9.   Sole Dispositive Power
      Person With
                         10.   Shared Dispositive Power             240,632
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  11.       Aggregate Amount Beneficially Owned by Each Reporting Person 240,632
--------------------------------------------------------------------------------
  12.       Check if the Aggregate Amount in Row (11) Excludes Certain Shares
            (See Instructions)
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  13.       Percent of Class Represented by Amount in Row (11)         58.6%
--------------------------------------------------------------------------------
  14.       Type of Reporting Person (See Instructions)  HC,CO
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CUSIP No. 538021 40 3                  13D                     Page 3 of 9 Pages
                                                           
   1.       Name Of Reporting Person
            I.R.S. Identification Nos. Of Above Persons (Entities Only)

            Northrop Grumman Systems Corporation (formerly Northrop
            Grumman Corporation) 95-1055798
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   2.       Check The Appropriate Box If A Member Of A Group*
                  (a)
                  (b)
--------------------------------------------------------------------------------
   3.       SEC Use Only
--------------------------------------------------------------------------------
   4.       Source of Funds (See Instructions)        BK, OO
--------------------------------------------------------------------------------
   5.       Check if Disclosure of Legal Proceedings Is Required Pursuant to
            Items 2(d) or 2(e)
--------------------------------------------------------------------------------
   6.       Citizenship or Place of   Delaware
            Organization              ------------------------------------------
--------------------------------------------------------------------------------
       Number of      7.   Sole Voting Power
      Shares Bene-    ----------------------------------------------------------
        ficially      8.   Shared Voting Power   240,632
     Owned by Each    ----------------------------------------------------------
       Reporting      9.   Sole Dispositive Power
      Person With     ----------------------------------------------------------
                      10.  Shared Dispositive Power  240,632
--------------------------------------------------------------------------------
  11.       Aggregate Amount Beneficially Owned by Each Reporting Person 240,632
--------------------------------------------------------------------------------
  12.       Check if the Aggregate Amount in Row (11) Excludes Certain Shares
            (See Instructions)
--------------------------------------------------------------------------------
  13.       Percent of Class Represented by Amount in Row (11)  58.6%
--------------------------------------------------------------------------------
  14.       Type of Reporting Person (See Instructions)  HC, CO
--------------------------------------------------------------------------------



ITEM 1. SECURITY AND ISSUER

     This statement on Schedule 13D (this "Schedule 13D") relates to the Series
B $2 Cumulative Preferred Stock, par value $5.00 per share (the "Litton
Preferred Stock"), of Litton Industries, Inc., a Delaware corporation
("Litton").  The principal executive offices of Litton are located at 21240
Burbank Boulevard, Woodland Hills, California 91367-6675.

     Responses to each item of this Schedule 13D are qualified in their entirety
by the Exhibits filed hereto.


ITEM 2.  IDENTITY AND BACKGROUND

     The names of the persons filing this statement are Northrop Grumman
Corporation, formerly NNG, Inc., a Delaware corporation ("New Northrop Grumman")
and Northrop Grumman Systems Corporation, formerly Northrop Grumman Corporation,
a Delaware corporation ("Systems").  The address of the principal business and
principal office of New Northrop Grumman and Systems is 1840 Century Park East,
Los Angeles, California 90067.  New Northrop Grumman and Systems are advanced
technology companies operating in the Integrated Systems Sector, Electronic
Systems and Sensor Sector and Information Technology segments of the broadly
defined aerospace and defense industry.  Neither New Northrop Grumman nor
Systems has been convicted in any criminal proceedings during the past five
years.  In addition, neither New Northrop Grumman nor Systems has been a party
to a civil proceeding of a judicial or administrative body of competent
jurisdiction during the past five years resulting in a judgment, decree or final
order enjoining future violations of, or prohibiting or mandating activities
subject to, Federal or State securities laws or finding any violation with
respect to such laws.

     On April 2, 2001, Systems completed a corporate reorganization that was
effected by action of its Board of Directors without a vote of its stockholders
pursuant to Section 251(g) of the Delaware General Corporation Law and an
Agreement and Plan of Merger, dated as of March 20, 2001 between Systems, New
Northrop Grumman and NGC Acquisition Corp. a Delaware corporation and indirect
wholly-owned subsidiary of Systems. In accordance with Section 251(g), NGC
Acquisition Corp. was merged with and into Systems with Systems as the
surviving corporation and a wholly-owned subsidiary of New Northrop Grumman, the
new holding company (the "Northrop Reorganization"). At the effective time of
that merger and in connection with the Northrop Reorganization, New Northrop
Grumman changed its name from NNG, Inc. to "Northrop Grumman Corporation," and
Northrop Grumman Corporation changed its name to "Northrop Grumman Systems
Corporation."


ITEM 3.  SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION

     New Northrop Grumman and Systems obtained the funds necessary to consummate
the Offer and the Litton Merger (each, as defined in Items 4 below) from (a)
senior unsecured loans of up to an aggregate of $6,000,000,000 and (b) an
offering pursuant to Rule 144A promulgated under the Securities Act of 1933, as
amended, of $1,500,000,000 in debt securities, as described in this section.

     New Northrop Grumman, Systems and Litton entered into a $2,500,000,000 364-
day revolving credit facility with The Chase Manhattan Bank, Credit Suisse First
Boston, and JP Morgan dated as of March 30, 2001 and a separate $2,500,000,000
five-year revolving credit facility with The Chase Manhattan Bank, Credit Suisse
First Boston, and JP Morgan dated as of March 30, 2001.  Each of the credit
facilities contains usual and customary affirmative and negative covenants,
including customary financial covenants.  Interest rates for the loans will be
adjusted LIBOR (which will at all times include statutory reserves) or the
adjusted base rate, at the election of Systems, in each case plus spreads
depending upon a schedule of certain specified Standard & Poor's and Moody's
Investor Services ratings of Systems.  Systems may elect periods of one, two,
three or six months for adjusted LIBOR borrowings under the loans.


     In February 2001, Systems issued $1,500,000,0000 of indebtedness to
qualified institutional buyers in reliance on the exemption from registration
provided by Section 4(2) of the Securities Act of 1933, as amended, consisting
of $750,000,000 of 7 1/8% Notes due 2011 and $750,000,000 of 7 3/4% Debentures
due 2031.  The 7 1/8% Notes due 2011 were issued at an issue price of 99.715% of
face value and the 7 3/4% Debentures due 2031 were issued at an issue price of
99.051% of face value, plus, in each case, accrued interest from February 27,
2001.  The Notes and Debentures represent senior unsecured obligations of New
Northrop Grumman and Systems.  The senior debt indenture pursuant to which
Systems issued the 7 1/8% Notes due 2011 and 7 3/4% Debentures due 2031 contains
customary covenants and restrictions relating to, among other things,
limitations on liens, sale and leaseback arrangements and funded debt of
subsidiaries.


ITEM 4.  PURPOSE OF THE TRANSACTION

     On January 5, 2001, Systems commenced a cash tender offer to purchase all
Litton Common Stock at $80.00 per share and all Litton Preferred Stock at $35.00
per share (the "Offer"), pursuant to a merger agreement, dated December 21,
2000, with Litton (the "Original Merger Agreement").  The Original Merger
Agreement contemplated a back-end merger (the "Litton Merger") to acquire any
remaining shares of Litton Common Stock not tendered and purchased in the Offer
(the "Original Transaction").

     Subsequently, Systems, New Northrop Grumman, Litton and LII Acquisition
Corp., a Delaware corporation and a wholly-owned subsidiary of New Northrop
Grumman ("LII Acquisition"), agreed to amend the terms of the Original
Transaction pursuant to the terms of an amended merger agreement, dated as of
January 23, 2001 (the "Amended Merger Agreement"), to provide that the Northrop
Reorganization would occur in connection with the acquisition of Litton.

     In addition, the terms of the Original Transaction were amended on January
23, 2001 to provide holders of shares of Litton common stock, par value $1.00
per share ("Litton Common Stock") with a choice among the following forms of
consideration in an offer to purchase or exchange for each share of Litton
Common Stock: (i) shares of New Northrop Grumman common stock ("New Northrop
Grumman Common Stock"); (ii) shares of New Northrop Grumman Series B preferred
stock ("New Northrop Grumman Preferred Stock"); and/or (iii) cash. The New
Northrop Grumman Common Stock and New Northrop Grumman Preferred Stock will be
issued on a basis that is intended to be tax-free to Litton stockholders.  The
number of shares of New Northrop Grumman Common Stock and New Northrop Grumman
Preferred Stock available in the offer to purchase or exchange is limited and,
if holders of Litton Common Stock elect to receive more shares of New Northrop
Grumman Preferred Stock or New Northrop Grumman Common Stock than are available,
such shares issued to Litton stockholders will be subject to proration.  Any
shares of Litton Common Stock not tendered and purchased in the offer to
purchase or exchange will be acquired for cash in a merger of Litton with a
wholly-owned subsidiary of New Northrop Grumman, LII Acquisition.  The terms of
the Original Transaction with respect to the purchase of the Litton Preferred
Stock remain unchanged by the Amended Merger Agreement.  The Original
Transaction as modified by the Amended Merger Agreement is referred to herein as
the "Amended Transaction."  Additional information concerning the Amended
Transaction is contained in New Northrop Grumman's Registration Statement on
Form S-4 (File No. 333-54800) (as amended from time to time, the "S-4"), a copy
of which has been filed with the Securities and Exchange Commission ("SEC").
Copies of the S-4 may be obtained, without charge, from the SEC website at
www.sec.gov.
-----------

     Also, in connection with the Amended Transaction, Systems, New Northrop
Grumman and Unitrin, Inc., a Delaware corporation ("Unitrin"), entered into a
stockholder's agreement, dated as of January 23, 2001, (the "Stockholder's
Agreement").  Pursuant to the Stockholder's Agreement, Unitrin agreed (i) to
tender, and to cause its subsidiaries, Trinity Universal Insurance Company, a
Texas corporation, United Insurance Company of America, an Illinois corporation
and Union National Life Insurance Company, a Louisiana corporation (these three
Unitrin subsidiaries, collectively the "Unitrin Subsidiaries") to tender, all
shares of Litton Common Stock


owned by Unitrin and the Unitrin Subsidiaries into the offer to purchase or
exchange; (ii) to vote, and to cause the Unitrin Subsidiaries to vote, all
shares of the Litton Common Stock held by Unitrin and the Unitrin Subsidiaries
at any meeting of stockholders of Litton in favor of the Amended Transaction or
any actions proposed to be taken in contemplation of the Amended Transaction and
against any action the effect of which could reasonably be expected to impede,
interfere with, delay, postpone or materially adversely affect the Amended
Transaction; (iii) to elect to receive, and to cause the Unitrin Subsidiaries to
elect to receive, New Northrop Grumman Preferred Stock in the offer to purchase
or exchange (each a "Preferred Election") with respect to at least 3,750,000
shares of Litton Common Stock in the aggregate; (iv) to elect to receive, and to
cause the Unitrin Subsidiaries to elect to receive, New Northrop Grumman Common
Stock in the offer to purchase or exchange (each a "Common Election") with the
remainder of any shares of Litton Common Stock held by Unitrin and the Unitrin
Subsidiaries as to which a Preferred Election is not made or as to which New
Northrop Grumman Preferred Stock is not received due to the proration provisions
of the Amended Transaction; and (v) with respect to any Common Election, to
specify that such election is made for the "Alternative A" proration option
described in the prospectus comprising a part of the S-4, which description is
incorporated by this reference.

     Unitrin also agreed, and has also agreed to cause the Unitrin Subsidiaries
(A) not to take any actions inconsistent with the obligations listed above, and
(B) subject to certain limitations, not to solicit or encourage, or enter into
any agreement concerning, any alternatives to the Amended Transaction.  Finally,
pursuant to the terms of the Stockholder's Agreement and the form of irrevocable
proxy attached thereto, Unitrin granted and agreed to cause the Unitrin
Subsidiaries to grant an irrevocable proxy and power of attorney in favor of
Systems and New Northrop Grumman with respect to all shares of Litton Common
Stock held by Unitrin and the Unitrin Subsidiaries, but only with respect to the
matters necessary for consummation of the transactions contemplated by the
Amended Merger Agreement and only to be exercised in the manner discussed above
with respect to the voting obligations of Unitrin and the Unitrin Subsidiaries.
The Stockholder's Agreement is filed as Exhibit (d)(5) to Amendment No. 4 to the
Tender Offer Statement on Schedule TO, dated January 31, 2001 and is
incorporated herein by reference. A summary of the Stockholder's Agreement is
contained in the S-4 filed by New Northrop Grumman, which summary is also
incorporated herein by reference.

     In addition, New Northrop Grumman, Systems and Unitrin entered into a
Registration Rights Agreement dated as of January 23, 2001 (the "Registration
Rights Agreement") giving Unitrin certain "demand" and "piggyback" registration
rights with respect to New Northrop Grumman Common Stock and New Northrop
Grumman Preferred Stock.  The Registration Rights Agreement is filed as Exhibit
(d)(6) to Amendment No. 4 to the Tender Offer Statement on Schedule TO, dated
January 31, 2001, and is incorporated herein by reference.  A summary of the
Registration Rights Agreement is contained in the S-4 filed by New Northrop
Grumman, which summary is also incorporated herein by reference.

     At Midnight New York City time on Monday, April 2, 2001, the Offer expired,
and at approximately 12:30 a.m. on April 3, 2001, New Northrop Grumman accepted
for purchase 240,632 shares of Litton Preferred Stock. On April 3, 2001, all but
four members of the Litton Board of Directors resigned from the Board of
Directors. Furthermore, the size of the Litton Board of Directors was reduced to
nine with the remaining members of the Litton Board of Directors electing five
new directors designated by New Northrop Grumman to fill the vacancies created
by the resignations of the members of the Litton Board of Directors. On April
11, 2001, C. B. Thornton, Jr. resigned from the Board of Directors pursuant to a
written letter of resignation.

     On April 11, 2001, Northrop Grumman assigned all of its right, title and
interest in the Litton Preferred Stock to Systems.

     The Reporting Persons may from time to time consider acquiring additional
shares of Litton Preferred Stock in open market transactions, privately
negotiated transactions or otherwise at a price not to exceed $35.00 per share.
In the event the Reporting Persons acquire two-thirds or more of the shares of
Litton Preferred Stock, the Reporting Persons will have sufficient voting power
to amend the terms of the Litton Preferred Stock in accordance with the
provisions set forth in Litton's Restated Certificate of Incorporation. In
addition, in the event there are less than 300 registered holders of the Litton
Preferred Stock, the Reporting Persons may deregister or delist the Litton
Preferred Stock. Apart from the foregoing, the Reporting Persons currently have
no specific plans or proposals that relate to or would result in the occurrence
of any of the transactions and events specified in clauses (a) through (j) of
Item 4 of Schedule 13D.


ITEM 5.  INTEREST IN SECURITIES OF ISSUER

     The information contained in Item 4 above is incorporated herein by
reference.

     The aggregate number of shares of Litton Preferred Stock beneficially owned
by each of Northrop Grumman and Systems is 240,632 which represents 58.6% of the
outstanding Litton Preferred Stock.

     Northrop Grumman has:
          .  0 shares of Litton Preferred Stock as to which it has the sole
             power to vote or to direct the vote;

          .  240,632 shares of Litton Preferred Stock as to which it has shared
             power to vote or to direct the vote;

          .  0 shares of Litton Preferred Stock as to which it has the sole
             power to dispose or to direct the disposition; and

          .  240,632 shares of Litton Preferred Stock as to which it has shared
             power to dispose or to direct the disposition.

     Systems has:
          .  0 shares of Litton Preferred Stock as to which it has the sole
             power to vote or to direct the vote;

          .  240,632 shares of Litton Preferred Stock as to which it has shared
             power to vote or to direct the vote;

          .  0 shares of Litton Preferred Stock as to which it has the sole
             power to dispose or to direct the disposition; and

          .  240,632 shares of Litton Preferred Stock as to which it has shared
             power to dispose or to direct the disposition.

     Except as set forth in Item 4 herein, to the best knowledge of each of the
Reporting Persons, within the past 60 days, each of the Reporting Persons has
not engaged in any transaction relating to the Litton Preferred Stock.  The
reporting obligations required by subsections 5(d) and 5(e) of this Item are not
applicable.


ITEM 6.  CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH RESPECT
TO SECURITIES OF THE ISSUER

     The descriptions of the Stockholder's Agreement and the Registration Rights
Agreement appearing in Item 4 of this Schedule 13D are incorporated herein by
reference, included as Exhibit 1 and Exhibit 2 to this Schedule 13D and filed as
exhibits to Amendment No. 4 to the Tender Offer Statement on Schedule TO, dated
January 31, 2001, and a summary of each of these agreements is contained in the
S-4 filed by NNG on February 1, 2001, which is incorporated herein by reference.




ITEM 7.  EXHIBITS

     The following agreements or plans are filed as exhibits to this Schedule
13D:



         
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Exhibit No.  Description
-----------  -------------------------------------------------------------------
          1  Stockholder's Agreement, dated as of January 23, 2001, by and among
             Unitrin, Inc., Northrop Grumman Corporation and NNG, Inc., and
             irrevocable proxies related thereto, filed as Exhibit (d)(5) to
             Amendment No. 4 to the Tender Offer Statement on Schedule TO, filed
             on January 31, 2001 and subsequently amended from time to time, and
             incorporated herein by reference.
--------------------------------------------------------------------------------
          2  Registration Rights Agreement, dated as of January 23, 2001, by and
             among Unitrin, Inc., Northrop Grumman Corporation and NNG, Inc.,
             filed as Exhibit (d)(6) to Amendment No. 4 to the Tender Offer
             Statement on Schedule TO, filed on January 31, 2001 and
             subsequently amended from time to time, and incorporated herein by
             reference.
--------------------------------------------------------------------------------
          3  $6,000,000,000 Senior Credit Facilities Commitment Letter dated
             January 30, 2001 from Credit Suisse First Boston, The Chase
             Manhattan Bank and JP Morgan, a division of Chase Securities, Inc.,
             filed as Exhibit (b)(ii) to Amendment No. 5 to the Tender Offer
             Statement on Schedule TO, filed on February 1, 2001 and
             subsequently amended from time to time, and incorporated herein by
             reference.
--------------------------------------------------------------------------------
          4  Agreement and Plan of Merger, dated as of December 21, 2001, by and
             among Litton Industries, Inc., Northrop Grumman Corporation, and
             LII Acquisition Corp., filed as Exhibit (d)(1) to the Tender Offer
             Statement on Schedule TO, filed on January 5, 2001 and subsequently
             amended from time to time, and incorporated herein by reference.
--------------------------------------------------------------------------------
          5  Amended and Restated Agreement and Plan of Merger, dated as of
             January 23, 2001, by and among Northrop Grumman Corporation, Litton
             Industries, Inc., NNG, Inc. and LII Acquisition Corp., filed as
             Exhibit (d)(4) to Amendment No. 4 to the Tender Offer Statement on
             Schedule TO, filed on January 31, 2001 and subsequently amended
             from time to time, and incorporated herein by reference.
--------------------------------------------------------------------------------
          6  Joint Filing Agreement filed as Exhibit 6 to this Statement on
             Schedule 13D.
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          7  Registration Statement on Form S-4 (File No. 333-54800) filed with
             the SEC by NNG, Inc. on February 1, 2001, and subsequently amended
             from time to time, including without limitation on March 5, 2001
             and March 27, 2001, and incorporated herein by reference.
--------------------------------------------------------------------------------
          8  Form of $2,500,000,000 364-Day Revolving Credit Agreement among
             NNG, Inc., Northrop Grumman Corporation, Litton Industries, Inc.,
             the Lenders party thereto, The Chase Manhattan Bank and Credit
             Suisse First Boston, as Co-Administrative Agents, Salomon Smith
             Barney Inc., as Syndication Agent, and The Bank of Nova Scotia and
             Deutsche Banc Alex. Brown, Inc. as Co-Documentation Agents filed as
             Exhibit 10.6 to Amendment No. 2 to the Registration Statement on
             Form S-4 filed with the SEC by NNG, Inc. on March 27, 2001, and
             incorporated herein by reference.
--------------------------------------------------------------------------------






         
          9  Form of $2,500,000,000 Five-Year Revolving Credit Agreement among
             NNG, Inc., Northrop Grumman Corporation, Litton Industries, Inc.,
             the Lenders party thereto, The Chase Manhattan Bank and Credit
             Suisse First Boston, as Co-Administrative Agents, Salomon Smith
             Barney Inc., as Syndication Agent, and The Bank of Nova Scotia and
             Deutsche Banc Alex. Brown, Inc. as Co-Documentation Agents filed as
             Exhibit 10.7 to Amendment No. 2 to the Registration Statement on
             Form S-4 filed with the SEC by NNG, Inc. on March 27, 2001, and
             incorporated herein by reference.
--------------------------------------------------------------------------------


     After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.

Dated: April 12, 2001
                                    Northrop Grumman Corporation
                                     (formerly NNG, Inc.)

                                     /s/ John H. Mullan
                                    __________________________________
                                    John H. Mullan,
                                    Corporate Vice President, Secretary and
                                    Associate General Counsel



                                                                       Exhibit 6

                            JOINT FILING AGREEMENT

     In accordance with Rule 13d-1(h) of the Securities Exchange Act of 1934, as
amended, the undersigned agree to the joint filing on behalf of each of them a
Statement on Schedule 13D (including any and all amendments thereto) with
respect to the Series B $2 Cumulative Preferred Stock of Litton Industries, Inc.
and further agree that this Joint Filing Agreement shall be included as an
Exhibit to such joint filing.

     The undersigned further agrees that each party hereto is responsible for
timely filing of such statement on Schedule 13D and any amendments thereto, and
for the completeness and accuracy of the information concerning such party
contained therein, provided that no party is responsible for the completeness
and accuracy of the information concerning the other party, unless such party
knows or has reason to believe that such information is inaccurate.

     This Joint Filing Agreement may be executed in one or more counterparts,
each of which shall be deemed to be an original instrument, but all of such
counterparts together shall constitute but one agreement.

     In evidence thereof the undersigned, being duly authorized, hereby execute
this Agreement this 12th day of April, 2001.


                              NORTHROP GRUMMAN SYSTEMS CORPORATION
                               (formerly Northrop Grumman Corporation)

                                   /s/ John H. Mullan
                              __________________________________________
                              Name:  John H. Mullan
                              Title:  Corporate Vice President and Secretary