The USO was a welfare, recreation and entertainment organisation set up for the US Military. This particular club was in Vung Tau and among other things provided a great cafeteria where all sorts of meals were available. My favourite was their T-Bone steaks, the size and flavour of which, I have not had since those days 40 years ago. On the funny side the Vietnamese cashier, heavily pregnant, proudly wore a name badge, Mrs No!
Image courtesy Brian Edmonds