US troops 'in the field'.
This shows a US troop operating a flamethrower.
A US troop operates a machine gun.
US troops slowly move through a jungle.
US troops look for booby traps in a river.
US troops attack from the cover of a building.
A US troop looks around for booby traps.
A US soldier takes aim, ready to shoot.
A US sniper aims for his target.