Laos, Cambodia airframe search

I am trying to locate some missing airframes, left by the US Army in these countries some time ago.
I need this information to tie up some records which are at this point missing details.
I was hoping someone on the board may have some current contacts in either Laos or Cambodia?
Any information at all in dealing with these areas would be very helpful.
Any help would be appreciated.
if anyone who has such contacts could PM me it would be much appreciated.