VSE Corporation operates as a diversified products and services aftermarket company in the United States. The company operates in three segments: Supply Chain Management Group, Aviation Group, and Federal Services Group. The Supply Chain Management Group segment offers sourcing, acquisition, scheduling, transportation, shipping, logistics, data management, and other services to assist its clients with supply chain management. It sells vehicle parts and mission critical supply chain services to support the United States Postal Service (USPS) vehicle fleet and commercial truck fleets; and fleet management and sustainment solutions, and managed inventory services to the Department of Defense (DoD). The Aviation Group segment provides maintenance, repair, and overhaul (MRO) services; and parts supply and distribution for commercial and general aviation jet aircraft engines and engine accessories. It serves commercial airlines, regional airlines, cargo transporters, MRO integrators and prov