United Airlines Holdings (formerly known as United Continental Holdings) is an airline holding company that primarily operates through its wholly-owned subsidiary United Airlines.
Lockheed Martin is a security and aerospace company engaged in the research, design, development, manufacture, integration, and sustainment of technology systems, products, and services.
Northrop Grumman is a company providing autonomous systems, cyber, C4ISR (Command, Control, Communications, Computers, Intelligence, Surveillance, and Reconnaissance), strike, space, logistics, and modernization solutions.
Northrop Grumman Space Systems (formerly known as Northrop Grumman Innovation Systems and Orbital ATK) is a provider of end to end space and launch systems and capabilities.