Exhibit 99
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News Release
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Contact:  Peter Thonis, 617-873-3512 (After 6 p.m., 617-237-4163)

                                 August 15, 1997

SUMMARY:  GTE completes acquisition of BBN.

STAMFORD, CONN.  -- GTE Corp. today announced that it has completed its 
acquisition of BBN  Corporation, which has become a wholly owned subsidiary of 
GTE.

         The  acquisition  was  completed  following  a  meeting  today  of  BBN
stockholders,  as required by Massachusetts  law, at which the BBN stockholders,
including GTE,  approved the merger of a GTE subsidiary with BBN. At the time of
the  meeting,  GTE owned  shares  representing  approximately  94 percent of the
voting power of the  outstanding  BBN stock.  In the merger,  each BBN share not
owned by GTE was  converted  into  the  right to  receive  $29 in cash,  without
interest.

         The  acquisition of BBN is a key component of GTE's data strategy,  one
of a series of steps GTE is taking to be a market-leading  national  provider of
voice, video and data services. BBN is part of GTE Internetworking, the business
unit  responsible  for the  implementation  of GTE's  data  strategy.  George H.
Conrades,  CEO and president of BBN,  also was named  corporate  executive  vice
president and president of GTE Internetworking on July 9.

                            Background on BBN and GTE
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         BBN  (www.bbn.com) is one of the nation's leading providers of Internet
access and valued-added services of businesses. It offers Fortune 1000 companies
a complete set of managed Internet  services,  including  high-speed and dial-up
access, systems development and electronic-commerce  support,  network security,
and Web hosting  services.  BBN also  provides  internetworking  innovation  and
funded research and development for government and commercial  customers.  BBN's
Internet  customers  include  many of the  world's top  information  technology,
manufacturing and financial services companies.

         With revenues of more than $21 billion in 1996,  GTE  (www.gte.com)  is
one of the largest publicly held  telecommunications  companies in the world. In
the  United  States,  GTE  offers  local and  wireless  service in 29 states and
long-distance  service  in all 50 states.  GTE was the first  among its peers to
offer "one-stop shopping" for local, long-distance and Internet access services.
Outside the United  States,  where GTE has operated for more than 40 years,  the
company  services  approximately  7 million  customers.  GTE is also a leader in
government and defense  communications  systems and equipment,  directories  and
telecommunications-based    information   services,   and   aircraft   passenger
telecommunications.

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