CBU 404

**CBU-404 (Construction Battalion Unit 404)** is a United States Navy Seabee unit with a distinguished history of supporting military construction and engineering projects. Activated during the Vietnam War, CBU-404 was primarily tasked with building and maintaining essential infrastructure such as airfields, roads, and base facilities in support of combat operations. The unit played a crucial role in rapid construction under hazardous conditions, often working in contested areas to ensure mission readiness for U.S. and allied forces. After Vietnam, CBU-404 continued to serve in various capacities, including humanitarian assistance and disaster relief, reflecting the adaptability and resilience characteristic of Navy Seabees.