Presumed in Vietnam, not Thailand. Only vets in Thailand getting approved, are the ones that proved there work duties put them on or near the perimeters of the bases they were station at. As for boots in the ground, you must have paperwork proving you were there. Sadly the DOD did not keep flight records or travel orders. which really sucks. Robert read the VA CP May 2010 Bulletin on the internet which shows what the regional offices go by.