US 1st Air Cavalry Division armed with M-16 rifles advance in a grassy area of Ankhe, South Vietnam, during a training mission. Soldiers aim with their rifles and advance. Soldiers descend from a hovering CH-47 helicopter using a rope ladder.
A US Army 1st Air Cavalry Division soldier equipped with an E63 personnel detector manpack, advances through a jungle area during training in Ankhe, South Vietnam. He signals to his buddy, that his E63 is malfunctioning. He assumes an alert defensive posture, as his buddy opens the manpack and checks its internal components. Interior view of the E63 shows air transport fan and chemicals.