ARVN Paratrooper riflemen. No helmet covers.
From left to right;
Trooper carrying LAWS. Also armed with a pistol side arm. He has the famous ARVN back pack.
NCO armed with an M16. Note the scarf which was common.
RTO using a PRC-25 Field Radio. Armed with an M16. Smoke grenades carried on the rear.
Trooper carrying an M16 and looking mean.