Yes they had CH-21s when they got in country. and an old bud of mine, Tom Cooper, was on his second tour in 66-67. He was the Bn. Maint. Warrant as a CW3 by then. He told me that his first hit in the 119th was a crossbow dart into the "christmas tree" (The aft rotor controls on the mast) and he got it at Dak To.
Salute
BT