Marines lay down barbed wire on the perimeter of Khe Sanh Base. North Vietnamese troops harassing the base in recent months with rockets, artillery and mortar fire. The enemy has been working its way closer to the base with some trench lines as close as 100 meters from the outer perimete.

John Olson, © 1968, 2017 Stars and Stripes, All Rights Reserved | BUY THIS PHOTO