Terri, Write them , your filing for herbicide exposure on or near the perimeter. The VA has never publicly admitted exposure to using AO on the perimeters in Thailand, that is why they ask for boots on the ground prove. They have admitted tactical and commerical herbicides only. You better have alot of proof you WORKED on or near the perimeter. Read up on all the claims that have been either disapproved or approved in last couple of years on the internet.