GES served as the sub-consultant on a task order contract to prepare construction documents for the rehabilitation of Concourse C/D at Washington Dulles International Airport. Design services are required to extend the useful life of midfield Concourse C/D to accommodate United Airlines operations for an additional seven to ten years. The Authority upgraded Concourse C/D to provide appropriate standards for safety, aesthetics, service level, and increased capacity for current and future domestic and international passenger traffic. Tasks have included interior improvements to the restrooms/switchbacks and electrical infrastructure upgrades