Filed by: Northrop Grumman Corporation (formerly NNG, Inc.) and
    Northrop Grumman Systems Corporation (formerly Northrop Grumman Corporation)
                                                  Pursuant to Rule 425 Under the
                                                          Securities Act of 1993
                                        Subject Company: Litton Industries, Inc.
                                                   Commission File No: 333-54800

                    [LETTERHEAD OF NORTHROP GRUMMAN CORP.]

                                                              Contact:  Jim Taft
                                                                  (310) 201-3335

For Immediate Release

NORTHROP GRUMMAN ISSUES STATEMENT
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ON TENDER OFFER FOR LITTON INDUSTRIES INC.
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     LOS ANGELES -- April 4, 2001 -- Northrop Grumman Corporation has issued the
following statement concerning its tender offer for Litton Industries Inc.,
which expired at midnight E.D.T. on April 2, 2001:

     "The depository, Equiserve Trust Co., NA, has advised Northrop Grumman that
as of the close of the tender offer, tenders (including guaranteed deliveries)
had been received for a number of shares which exceeds the total number of
Litton common shares outstanding.

     "The most recent information furnished by Litton indicates that less than
46 million shares of Litton common stock are outstanding.  The depository in the
tender offer has indicated that tenders have been received for a total of
51,368,791 shares of Litton common stock, including guaranteed deliveries
totaling 16,425,431 shares. Stockholders tendering by guaranteed delivery must
make delivery of the tendered shares within three NYSE trading days after the
notice of guaranteed delivery is executed.

     "Based on preliminary information, the company believes that tenders have
been received electing in excess of the maximum 13 million shares of common
stock and 3.5

                                    -more-


NORTHROP GRUMMAN ISSUES STATEMENT
- ---------------------------------
ON TENDER OFFER FOR LITTON INDUSTRIES INC.
- ------------------------------------------

million shares of Series B preferred stock of Northrop Grumman.
The company does not expect to be able to determine preliminary proration
factors until the guaranteed deliveries have been completed or determined to be
invalid.  Determination of the final proration factors will not be completed
until all tenders have been checked for accuracy and completeness, a process
which is expected to take the remainder of the week."

     Northrop Grumman Corporation is a $15 billion, global aerospace and defense
company with its worldwide headquarters in Los Angeles.  Northrop Grumman
provides technologically advanced, innovative products, services and solutions
in defense and commercial electronics, systems integration, information
technology and non-nuclear shipbuilding and systems.  With 80,000 employees and
operations in 44 states and 25 countries, Northrop Grumman serves U.S. and
international military, government and commercial customers.


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Northrop Grumman Corporation (formerly NNG, Inc.) 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.