The landmark deal, announced Aug. 3 by Northrop Grumman and the Defense Department, involves Northrop Grumman and Lockheed Martin, and is intended to accelerate missile interceptor production. Northrop Grumman plans to invest millions of dollars in its San Diego facility to reach the increased production rate. To support the planned increase in production, Northrop Grumman expects to add manufacturing space and equipment, including more advanced equipment. This story was originally reported for broadcast by NBC San Diego. AI tools helped convert the story to a digital article, and an NBC San Diego journalist edited the article for publication.