On 22 November at 11:30 a unit of the 199th LIB found a weapons cache in a tunnel 26 miles northeast of Bà Rịa containing one 57mm recoilless rifle, two 82mm mortars, a 12.7mm machinegun, 14 light machineguns, 82 individual weapons, 20 crew-served weapons, 15 RPG-2 grenades and 29 antitank mines.