U.S. 173rd Airborne Birgade deploys to Vietnam from Okinawa for combat operations in II Coprs. U.S. III MAF Hqs established in Da Nang . U. S. 4th Marine Regt 3rd Marine Division deployed to Vietnam from Okinawa for combat ops in I Corps. U.S. Navy beings Operation Market Time to detect and intercept surface traffic in South Vietnam costal waters and to seize enemy craft.