It turned out the fire was coming from inside huge ant hills the NVA had hollowed out and using as bunkers. After trying grenades, M72 LAWS and failing to nock out the ant hills, SSG Carl Johnson organized a team of two rifles and a shotgun and went from anthill to anthill knocking them out. That resulted in a number POWs and NVA kills. 

Around 4-5 PM I was looking around our sector with one of my soldiers, SP4 Otero, trying to find stuff to build our defenses when we came across an enemy AA machinegun on a tripod, we thought it would be a good idea to move it to our position. As we were trying to move it we came under sniper fire, we got behind a log and began to return fire moving along the log, I got up to fire and got hit in the chest, SGT Larsen came to see what happened and got hit in the head, later as they were trying to maneuver to get the sniper, LT Glynne was killed and SGT Stine wounded. Just before dark I was medevaced, and later it seems like we could have had Company formations at the hospital in Qui Nhon. That in general is my recollection of 10 Alfa. 

We tried to land twice, the 1st Plt and Co CP were already in. The LZ was covered with water in some areas. The 50 Cals were in position inside the perimeter, When our troops initially landed they were not manned, the NVA was in the tree line (according to SLA Marshall, to get out of the rain, in "Battles in the Monsoon", according to Bisantz they had moved to defend from another direction because the prep fires hit another LZ a short distance from Alfa . I was medevaced about 1800 first day, may have been the last bird able get in and out.