Some of the areas I was in were too clean of foliage to be natural.

All the paved pathways between buildings at Korat AFB in Thailand had strips of bare dirt several feet wide on each side. They explained that it was for "snake control"- - - - -"There are three kinds of snakes in this area- - -two of them are deadly poisonous and the other one will eat you for lunch!" According to the "official" word, Agent Orange was only used around the perimeter fences for security reasons, but I had my doubts about how they kept those pathways so clean. Until a couple of years ago, the only USAF vets who were eligible for AO compensation were security police who patrolled the fence lines- - - -even though the NCO barracks where I slept every night was less than 100 yards from the base perimeter! That restriction got dropped during the Camp Lejeune water contamination flap, and everybody who served in Thailand became eligible for AO exposure evaluations.
Jerry