Thomas R. Irvin

Computer Sciences Corp. provided information technology solutions. It operated through the global business services, global infrastructure services segments. The company was founded by Roy Nutt and Fletcher Roseberry Jones on April 16, 1959 and was headquartered in Tysons, VA.

Dravo Corp manufactures and supplies lime products. It activities include the production of construction aggregates and lime for industrial, utility, municipal and construction applications. The company was founded in 1891 and is headquartered in Pittsburgh, PA.

Raytheon Co. is engages in the development and manufacture of defense and security solutions. It operates through the following segments: Integrated Defense Systems, Intelligence, Information, and Services (IIS), Missile Systems, Space and Airborne Systems (SAS), and Forcepoint. The Integrated Defense Systems segment offers air and missile defense, large land- and sea-based radar solutions, command, control, communications, computers, cyber and intelligence solutions, and naval combat and ship electronic systems. The IIS segment provides technical and professional services to intelligence, defense, federal and commercial customers. The Missile Systems segment develops, integrates, and produces missile and combat systems for the armed forces of U.S. and allied nations. The SAS segment designs and manufactures sensor and communication systems used in intelligence, surveillance, precision engagement, and aerial operations. The Forcepoint segment provides cyber security products such as insider threat solutions, data loss prevention, firewall technology, cloud and email security, and cross domain transfer. The company was founded by Laurence K. Marshall, Vannevar Bush, and Charles G. Smith on July 7, 1922 and is headquartered in Waltham, MA.