DoE Office of Secure Transportation MSTS Eastern Command
The Office of Secure Transportation (OST) is responsible for the safe and secure transport of government-owned special nuclear materials in the contiguous United States. These classified shipments can contain nuclear weapons or components, enriched uranium, or plutonium. Cargo is transported in highly modified secure tractor-trailers and escorted by armed Federal agents in other vehicles who provide security and national incident command system response in the event of emergencies. Two truck-themed challenge coins featuring secure transport imagery: the front depicts a blue semi-truck with patriotic and musical symbols on the trailer, while the reverse shows a blue semi-truck with Y12, three-star insignia, and Office of Secure Transportation MSTS Eastern Command branding.