CBU-402

CBU-402, or Construction Battalion Unit 402, is a United States Navy Seabee unit established during the Vietnam War era. Its primary mission was to provide construction and engineering support for forward-deployed naval and Marine forces in Southeast Asia. The unit was responsible for building airfields, roads, and defensive structures, often operating in hazardous and contested environments. CBU-402's efforts significantly enhanced the operational capabilities of U.S. forces, earning commendations for their technical skill and resilience under fire.