Soldier with a belt-fed machine gun. Puffs of smoke are given off as the gun is

View from over the shoulder of a soldier as he is shooting a belt-fed machine gun. Trees and a distant open field are in the background. He is wearing a helmet. Puffs of smoke are given off as the gun is fired. Also seen are the casings being expelled from the gun. From a training for Green Beret United States Army Special Forces.