<prompt> Translate the following text to EnglishLockheed Martin ilitangaza ununuzi wake wa Northrop Grumman, kukamilisha kuunganishwa kwa tasnia ya ulinzi katika kambi mbili Lockheed vs.  <response>: Lockheed Martin announced its purchase of Northrop Grumman, completing the defense industrys consolidation into two camps Lockheed vs. 