Here's a link to a Facebook page which is all about those who served in the 2nd (Hawk) Missile Bn of the 71st Air Defense Artillery in Korea. Check it out and add your photos and experiences to the page. You may find someone you know there.
A 2 71 1967 1968
I personally rode on the truck as they sprayed A Battery.
For those who broke down the hill and went north and set up again as a timed exercise this would put you on the DMZ. You would then be consider a DMZ vet for the purpose for claims for agent orange.