Cpl. Sean Castillo, a welder with Maintenance Company, 1st Maintenance Battalion (-) Reinforced, 1st Marine Logistics Group (Forward), puts a new weld on a section of an M1 870 trailer at the Intermediate Maintenance Lot on Camp Leatherneck, Afghanistan, April 27. The new weld is capable of supporting 110,000 pounds per square inch. Additionally, Castillo puts three times as many welds on the troubled areas to ensure the trailers can withstand Afghanistan’s rough terrain. - Cpl. Sean Castillo, a welder with Maintenance Company, 1st Maintenance Battalion (-) Reinforced, 1st Marine Logistics Group (Forward), puts a new weld on a section of an M1 870 trailer at the Intermediate Maintenance Lot on Camp Leatherneck, Afghanistan, April 27. The new weld is capable of supporting 110,000 pounds per square inch. Additionally, Castillo puts three times as many welds on the troubled areas to ensure the trailers can withstand Afghanistan’s rough terrain.