This industry comprises establishments primarily engaged in providing air, surface, or combined mode courier and express delivery services of parcels, but not operating under a universal service obligation. These parcels can include goods and documents, but the express delivery services are not part of the normal mail service. These services are generally between metropolitan areas, urban centers, or international, but the establishments of this industry form a network that includes local pick-up and delivery to serve their customers' needs. Illustrative Examples: Air courier services, except establishments operating under a universal service obligation Express delivery services, except establishments operating under a universal service obligation Courier services (i.e., intercity network), except establishments operating under a universal service obligation Cross-References. Establishments primarily engaged in--