Women and children crouch in a muddy canal as they take cover from intense Viet Cong fire at Bao Trai, about 20 miles west of Saigon, on January 1, 1966. Paratroopers, background, of the U.S. 173rd Airborne Brigade escorted the South Vietnamese civilians through a series of firefights during the U.S. assault on a Viet Cong stronghold.