LOS ANGELES, March 23, 2001 (PRIMEZONE) -- 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49,198,296 shares of Litton Industries common and Series B preferred stock had been validly tendered and not withdrawn.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.

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 .

Members of the news media may receive our releases via e-mail by registering at: http://www.northgrum.com/cgi-bin/regist_form.cgi

LEARN MORE ABOUT US: Northrop Grumman news releases, product information, photos and video clips are available on the Internet at: http://www.northgrum.com

  CONTACT: Northrop Grumman Corporation 
         Jim Taft
         (310) 201-3335