The Campbell-Hill Aviation Group, LLC (Campbell-Hill) is a privately-owned U.S. consulting firm providing a wide range of services to the aviation industry. Campbell-Hill's client base includes airports, passenger airlines, all-cargo carriers, industry associations, and city, state, and federal government agencies. Campbell-Hill is located in the Washington, D.C. area, which provides ready access to U.S. government agencies, law firms, and leading transportation and public policy research centers. Campbell-Hill specializes in developing strategies for air service expansion, air service deficiency studies, comparative airport analysis, route proposals and presentations, economic impact studies, air cargo analysis and marketing, national and international policy issues analysis, regulatory analysis, traffic forecasting, economic and demographic research, master planning support (economic analysis and forecasting), survey research, and the preparation of exhibits and testimony for contested DOT route cases and civil litigation