Filed by: Northrop Grumman Corporation
                                                                   and NNG, Inc.
                                                  Pursuant to Rule 425 Under the
                                                          Securities Act of 1933
                                        Subject Company: Litton Industries, Inc.
                                                   Commission File No: 333-54800


                                                              Contact:  Jim Taft
                                                                  (310) 201-3335
For Immediate Release

NORTHROP GRUMMAN EXTENDS
- ------------------------
TENDER OFFER FOR LITTON INDUSTRIES INC.
- ---------------------------------------

     LOS ANGELES -- March 23, 2001 -- Northrop Grumman Corporation (NYSE: NOC)
announced today that it has extended its pending tender offer for the common and
preferred stock of Litton Industries Inc. (NYSE: LIT) from March 22, 2001, to
March 29, 2001, at midnight E.S.T.

     The existing tender offer for all outstanding Litton stock, as previously
announced, will be extended in increments of five business days or less until
the Hart-Scott-Rodino and European Union waiting periods have expired as
provided in Northrop Grumman's agreement with Litton.

     At the close of business on March 22, 2001, approximately 49,198,296 shares
of Litton Industries common and Series B preferred stock had been validly
tendered and not withdrawn.  Of that total, 11,369,204 shares were subject to
guaranteed delivery.  According to Litton, there were 51,292,796 shares
outstanding and reserved for issuance under its employee stock option,
restricted stock or deferred stock plans as of Nov. 30, 2000.

                                    -more-


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NORTHROP GRUMMAN EXTENDS
- ------------------------
TENDER OFFER FOR LITTON INDUSTRIES INC.
- ---------------------------------------

     Northrop Grumman Corporation, headquartered in Los Angeles, is a world-
class, high technology company providing innovative solutions in systems
integration, defense electronics and information technology for its U.S. and
international military, government and commercial customers, as a prime
contractor, principal subcontractor, team member or preferred supplier.  The
company had revenues of $7.6 billion in 2000 and has a workforce of
approximately 39,000 employees.

NNG, Inc., a wholly-owned subsidiary of Northrop Grumman Corporation, has filed
a Registration Statement on Form S-4 with the Securities and Exchange Commission
(the "SEC") in connection with its offer to purchase or exchange all of the
outstanding capital stock of Litton Industries, Inc.  Litton stockholders should
read such Registration Statement and any other relevant documents filed with the
SEC carefully before making any decisions with respect to the offer to purchase
or exchange because these documents contain important information.  Copies of
the Registration Statement and any related documents filed with the SEC can be
obtained free of charge at the website maintained by the SEC at www.sec.gov.

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