At 04:07am the Mount Pleasant Fire Department responded to a report of an explosion and fire at the Wando Welch Terminal on Long Point Road. Upon arrival, crews found a large debris field and a small area of fire actively burning. Firefighters quickly extinguished the fire and treated one patient for injuries. Charleston County EMS transported a single patient for evaluation. The truck was operated by a private vendor and provided maintenance at the facility. The damage was isolated to the vehicle and did not involve shipping cargo or infrastructure at the Terminal. Mount Pleasant Fire Department investigators identified the potential cause as buildup of flammable vapors in the cargo area of the vehicle.