For those interested in that bloody war this should be a very good documentary source with pictures taken on the field by the GIs.

Here is an Audio interview with David Parks (son of the late photo-journalist/film director/composer Gordon Parks) who was a Forward Observer on operations and shooting photos of his mates and of the Vietnamese population they were meeting: an interesting inside account. A few of his pictures are also shown: while showing a few images they also talk about technical aspects and practicalities relating to the project in general and to this kind of snapshot photography.