Sky Soldier: Vietnam in 3D The Vietnam War is one of the most photographed in history. It was believed that all the images taken during the war were only in 2D -- until now. A recently discovered archive of rare 3D photographs has been found and is now featured in the new documentary, Sky Soldier. The photos were taken by Joel Glenn, a young helicopter pilot from Florida who had a passion for taking pictures in three-dimensions. Sky Soldier documents Joel's time growing up on his family farm, his two tours in Vietnam and his battle with cancer caused by his exposure to the chemical Agent Orange. Joel Glenn's remarkable collection contains the only know 3D photos taken of American troops fighting in Vietnam. His story -- and his pictures -- bring the war in Vietnam to life in ways never before seen.