The top 10 contractors in the USA are listed below. Know their humble beginnings and the road they took to become the top 10 most popular contractors in the USA.

1. Lockheed Martin Corporation was established in March 1995 through the merging of 2 great companies, namely Lockheed and Martin Marietta Corporation. They are headquartered in Bethesda, Maryland with about 140000 people worldwide. Lockheed Martin Corporation is a complex technology company that engages in development, research, design, manufacture, and integration of advanced technology systems, services, and products.

2. Boeing is not only the world's leading aerospace company but also a top manufacturer of commercial jetliners and military aircrafts. It has a long tradition of aerospace management and innovation. It aims to spread its product line and services to meet the needs of their target market. Boeing's broad range of abilities consists of creating more new and efficient members of the commercial airplane family as well as incorporating defense systems, military platforms, and fighter planes through network-centric operations. It is also into the creation of advanced technology solutions to attain sales across business units and the development of investment solutions for its customers. It is located in Chicago and employs more than 160000 specialists in the industry.

3. Northrop Grumman Corporation is a technology-based company apart from a global defense unit. It boasts of 120000 employees. It also provides innovative products and solutions. It is situated in Los Angeles.

4. KBR is a leading global engineering, construction and services company that supports petrochemicals, energy, and civil infrastructure, especially for various government service sectors. The company is a principal growing end-market services institution. KBR also offers a wide range of services through its upstream and downstream services with its government, infrastructure, technology, and ventures on business segments. It can be found in Houston with about 50,000 numbers of employees. One of its areas of responsibility is the customer's security and satisfaction.

5. Science Application International Corporation (SAIC) is an application, engineering and scientific company that uses a profound area of awareness in order to overcome different problems that existed. It is constantly and deliberately committed to ethical performance and integrity. SAIC has approximately 44,000 employees serving the customers and has their headquarters in San Diego.

6. Raytheon Corporation located in Waltham, Massachusetts has a total of 73,000 employees. It is a technological company that focuses on homeland security, defense and other government markets all through the world. Raytheon offers state of the art electronics, systems integration and other capabilities, particularly in the areas of effects, via sensing, command, communication, controls and intelligence systems as well as a wide range of mission support services.

7. General Dynamics head the market in business aviation and other information-systems and technologies. It has four major business sectors: aerospace design, combat system, marine system and information systems and technology. The company, which employs more than 81,000 of workers, has its headquarters in Falls Church, Va.

8. With 60,000 employees located in New York, L-3 Communications Corporation serves as a prime contractor in control, communication, command, and government services, along with modernization. It has the broadest specialized products in the industry. It also holds the title as the major provider of homeland defense products and services for a selection of rising markets.

Their headquarters is in Plano, Texas. Having 131,000 numbers of employees, EDS is an advertising campaign company that offers an extensive selection of business and technology solutions, especially in helping their clients develop their business performance. They also give outstanding services and innovation. Plus, they serve as an instrument of successful long-term business relationships.

Computer Sciences Corporation is also listed amongst the best. It is located in El Segundo, California, with about 79,000 employees. One of their purposes is to deliver innovative business and technology solutions which will surely help the commercial and government customers in attaining what they want most. CSC is a leading outsourcing and global consulting company that aims to provide customers the ability to meet their strategic goals and to profit on the usage of advanced technology.