These photographs were shot during the siege at Khe Sanh, by combat photographer David Duncan, who lived with the trapped Marines inside their enemy-encircled valley. I Protest! is an unforgettable document written on behalf of the Americans who fell at Khe Sanh, the ones for whom help came too late. Mr. Duncan wrote the text before the Khe Sanh siege was lifted - an impassioned plea for sanity in a disastrous war. "I'm just a veteran combat photographer and foreign correspondent who cares intensely about my country and the role we are playing - and assigning to ourselves - in the world of today. And I want to shout a loud and clear protest at what has happened at Khe Sanh, and in all of Vietnam."