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- U.S. National Guard
- The National Guard, mainly made up of part-time guards, assists in local emergencies, which can also be referred to as federal service.
- Raytheon
- Raytheon Company, a major U.S. defense contractor, is headquartered in Waltham, Massachusetts. Raytheon employs 73,000 people worldwide and has revenues of about $20 billion, more than 90 percent of which comes from defense contracts. Raytheon is the fifth largest defense contractor in the world, according to Defense News in 2005.
- Lockheed Martin Corporation
- Lockheed Martin Corporation, formerly known as Lockheed Martin Space Systems Company (LMT), was founded in 1912 as an American aerospace manufacturer. In 1995, the company merged with Martin Marietta Corporation and changed its name to Lockheed Martin Corporation. Lockheed Martin is currently headquartered in Bethesda, Maryland, in Montgomery County.
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