HEI

aircraft and spacecraft maintenance and engineering services in the fields of safety, reliability and quality assurance of space vehicles; logistics and maintainability analysis; spaceflight and systems engineering, payload integration, operations, and mission support services; training analysis, design, development, evaluation, and implementation services for aircraft crews; programmatic support, configuration management, strategic planning, and cost analysis services to government and commercial facilities; and publications, graphics, public affairs and library management

aircraft and spacecraft maintenance and engineering services in the fields of safety, reliability and quality assurance of space vehicles; logistics and maintainability analysis; spaceflight and systems engineering, payload integration, operations, and mission support services; training analysis, design, development, evaluation, and implementation services for aircraft crews; programmatic support, configuration management, strategic planning, and cost analysis services to government and commercial facilities; and publications, graphics, public affairs and library management