Warbus (1986)

A motley crew is compelled to abandon their mission base when a brutal VC attack erupts. They escape on an aging school bus, seeking refuge from the chaos. Along their treacherous journey, they encounter three seasoned American Special Forces soldiers who join their ranks. United by a common goal, this unlikely band must confront the dangers of war while navigating through hostile territory, battling both external threats and their own fears in a desperate bid for survival.